title: FFmpeg Reader
media types:
Audio Video
description: Read an audio and/or video file using FFmpeg.
version: 3
creator:
copyright: Meltytech, LLC
license: LGPLv2.1
URL: http://www.ffmpeg.org/
This service uses mlt_cache to prevent many simultaneous, open instances of libavformat and libavcodec contexts, file handles, and threads in memory at the same time. Not only does it save on RAM usage, but kernels enforce maximum open file handles and threads per process. Without caching, large projects could easily run into these limits. The default producer cache size is in mlt_cache at size 4. When using mlt_multitrack, the size is adjusted automatically to be the number of tracks plus one if at least 4. This makes it rather dynamic and automatic; however, there are some service graph configurations or authoring scenarios that do not exclusively use the multitrack for multi-layer operations and may need a larger avformat producer cache size. One can set the environment variable MLT_AVFORMAT_PRODUCER_CACHE to a number to override and increase the size of this cache (or to lower it for limited use cases and seeking to minimize RAM). One can set the environment variables MLT_AVFORMAT_HWACCEL and MLT_AVFORMAT_HWACCEL_DEVICE to affect the usage of hwaccel decoding globally. Hardware decoding gracefully falls back to software decoding.
title: File/URL
description:
A file name specification or URL in the form:
[{protocol}|{format}]:{resource}[?{format-parameter}[&{format-parameter}...]]
For example, video4linux2:/dev/video1?width=320&height=240
Note: on the bash command line, '&' must be escaped as '\&'.
If you need '?' in the resource name it must be escaped as '\?'.
Use 'f-list' to see a list of supported file formats.
Use 'vcodec-list' to see a list of supported video decoders.
Use 'acodec-list' to see a list of supported audio decoders.
type: string
readonly: no
required: yes
widget: fileopen
title: Audio index
description:
Choose the absolute stream index of audio stream to use (-1 is off). When this value is equal to the maximum size of a 32-bit signed integer or the string "all" then all audio tracks are coalesced into a bundle of channels on one audio track.
type: integer
readonly: no
required: no
minimum: -1
default: 0
widget: spinner
title: Audio Stream
description:
Choose the relative stream index (n-th) of audio to use (-1 is off). When this value is equal to the maximum size of a 32-bit signed integer or the string "all" then all audio tracks are coalesced into a bundle of channels on one audio track. This property has a higher priority than audio_index.
type: integer
readonly: no
required: no
minimum: -1
default: 0
widget: spinner
title: Video index
description:
Choose the absolute index of video stream to use (-1 is off)
type: integer
readonly: no
required: no
minimum: -1
default: 0
widget: spinner
title: Video Stream
description:
Choose the relative stream index (n-th) of video to use (-1 is off). This property has a higher priority than video_index.
type: integer
readonly: no
required: no
minimum: -1
default: 0
widget: spinner
title: Decoding threads
description:
Choose the number of threads to use in the decoder(s)
type: integer
readonly: no
required: no
minimum: 0
maximum: 4
default: 1
unit: threads
widget: spinner
title: Sample aspect ratio
description:
Optionally override a (mis)detected aspect ratio
type: float
readonly: no
required: no
minimum: 0.001
maximum: 9.999
title: Frame rate
description:
the framerate of the resource
type: float
readonly: yes
required: no
unit: frames/second
scale: 2
title: Supports seeking
description:
if the resource can seek
type: boolean
readonly: yes
required: no
title: Width
type: integer
readonly: yes
required: no
unit: pixels
title: Height
type: integer
readonly: yes
required: no
unit: pixels
title: Disable image caching
type: boolean
readonly: no
required: no
widget: checkbox
title: Number of images cache
description:
By default, this producer caches images to facilitate YADIF deinterlace, which needs previous and next frames. Also, caching helps with frame- stepping within a player. The default number of images cached is supplied by the MLT framework, which is currently 4, but you can override it with this property. You can also disable caching by setting it to 0. If you are using parallel processing with YADIF deinterlacing, then you might need to increase caching to prevent inadvertent backward seeks. One can also set this value globally for all instances of avformat by setting the environment variable MLT_AVFORMAT_CACHE.
type: integer
readonly: no
required: no
title: Force progressive
description:
When provided, this overrides the detection of progressive video.
type: boolean
readonly: no
required: no
widget: checkbox
title: Force top field first
description:
When provided, this overrides the detected field order of interlaced video.
type: boolean
readonly: no
required: no
widget: checkbox
title: Force frame rate
description:
When provided, this attempts to override the detected frame rate of the video.
type: float
readonly: no
required: no
widget: checkbox
title: Force Full Range Color
description:
When provided, this overrides the detected color range of the video (Y'CbCr only).
type: boolean
readonly: no
required: no
title: Force colorspace
description:
When provided, this overrides the detected colorspace of the video (Y'CbCr only).
type: integer
readonly: no
required: no
values:
title: Force transfer characteristic
description:
When provided, this overrides the detected gamma transfer of the video. See libavcodec AVColorTransferCharacteristic for values.
type: integer
readonly: no
required: no
title: Video delay
description:
Manually adjust A/V synchronization. A negative value advances the video instead of delaying it.
type: float
readonly: no
required: no
default: 0
unit: seconds
widget: timecode
title: Automatically reconnect?
description:
Whether to attempt to automatically reconnect to a live source when a read failure occurs.
type: boolean
readonly: no
required: no
widget: checkbox
title: Exit upon disconnection?
description:
When this is set, the program will terminate with an error if a live source becomes disconnected.
type: boolean
readonly: no
required: no
widget: checkbox
title: Mute on Pause
description:
Mute the audio when the same frame is requested twice in a row.
type: boolean
readonly: no
required: no
default: 0
widget: checkbox
title: Seek Threshold
description:
Number of frames required to trigger a seek forward rather than continuous read when reading forward. This can be useful to optimize some applications which rely on accelerated reading of a media file or in cases where lack of I-frames cause libavformat to face issues in seeking and where user tries to minimize the number of seek calls.
type: integer
readonly: no
required: no
default: 64
unit: frames
title: Auto-rotate?
description:
Whether to automatically compensate image orientation if the file is tagged with appropriate metadata and this resource has video/images.
type: boolean
readonly: no
required: no
default: 1
title: Rotation Override
description:
While there is automatic rotation for orientation, some files are missing the metadata for it. This provides an override. It can only rotate by a multiple of 90 degrees.
type: integer
readonly: no
required: no
unit: degrees
title: Filtergraph
description:
Filtergraph to apply to resource. Uses libavfilter syntax.
type: string
readonly: no
required: no
type: string
readonly: no
required: no
format: flags
values:
description:
set probing size
type: integer
readonly: no
required: no
minimum: 32
default: 5000000
format: 64-bit
description:
number of bytes to probe file format
type: integer
readonly: no
required: no
minimum: 0
maximum: 2147483646
default: 1048576
type: string
readonly: no
required: no
format: flags
values:
description:
allow seeking to non-keyframes on demuxer level when supported
type: string
readonly: no
required: no
description:
specify how many microseconds are analyzed to probe the input
type: integer
readonly: no
required: no
minimum: 0
default: 0
format: 64-bit
description:
max memory used for timestamp index (per stream)
type: integer
readonly: no
required: no
minimum: 0
default: 1048576
description:
max memory used for buffering real-time frames
type: integer
readonly: no
required: no
minimum: 0
default: 3041280
description:
print specific debug info
type: string
readonly: no
required: no
format: flags
values:
description:
maximum muxing or demuxing delay in microseconds
type: integer
readonly: no
required: no
minimum: -1
default: -1
description:
number of frames used to probe fps
type: integer
readonly: no
required: no
minimum: -1
maximum: 2147483646
default: -1
description:
set error detection flags (deprecated; use err_detect, save via avconv)
type: string
readonly: no
required: no
format: flags
values:
description:
set error detection flags
type: string
readonly: no
required: no
format: flags
values:
description:
use wallclock as timestamps
type: string
readonly: no
required: no
description:
set number of bytes to skip before reading header and frames
type: integer
readonly: no
required: no
minimum: 0
default: 0
format: 64-bit
description:
correct single timestamp overflows
type: string
readonly: no
required: no
description:
how strictly to follow the standards (deprecated; use strict, save via avconv)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
how strictly to follow the standards
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
maximum number of packets to read while waiting for the first timestamp
type: integer
readonly: no
required: no
minimum: 0
default: 50
description:
set information dump field separator
type: string
readonly: no
required: no
default: ‘, ‘
description:
List of decoders that are allowed to be used
type: string
readonly: no
required: no
description:
List of demuxers that are allowed to be used
type: string
readonly: no
required: no
description:
List of protocols that are allowed to be used
type: string
readonly: no
required: no
description:
List of protocols that are not allowed to be used
type: string
readonly: no
required: no
description:
maximum number of streams
type: integer
readonly: no
required: no
minimum: 0
default: 1000
description:
skip duration calculation in estimate_timings_from_pts
type: string
readonly: no
required: no
description:
Maximum number of packets to probe a codec
type: integer
readonly: no
required: no
minimum: 0
default: 2500
description:
Maximum number of bytes to probe the durations of the streams in estimate_timings_from_pts
type: integer
readonly: no
required: no
minimum: 0
default: 0
format: 64-bit
description:
(ac3)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(acm)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
set simulated line speed (bytes per second) (adf)
type: integer
readonly: no
required: no
minimum: 1
default: 6000
description:
set video size, such as 640x480 or hd720. (adf)
type: string
readonly: no
required: no
description:
set framerate (frames per second) (adf)
type: string
readonly: no
required: no
description:
(amr)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(amrnb)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(amrwb)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(apac)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
ignore loop setting (apng)
type: string
readonly: no
required: no
description:
maximum framerate (0 is no limit) (apng)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
default framerate (0 is as fast as possible) (apng)
type: integer
readonly: no
required: no
minimum: 0
default: 15
description:
(aptx)
type: integer
readonly: no
required: no
minimum: 0
default: 48000
description:
(aptx_hd)
type: integer
readonly: no
required: no
minimum: 0
default: 48000
description:
set the movie frame rate (aqtitle)
type: string
readonly: no
required: no
format: numerator/denominator
description:
Don't try to resynchronize by looking for a certain optional start code (asf)
type: string
readonly: no
required: no
description:
Export full XMP metadata (asf)
type: string
readonly: no
required: no
description:
(av1)
type: string
readonly: no
required: no
description:
use odml index (avi)
type: string
readonly: no
required: no
description:
(avs2)
type: string
readonly: no
required: no
description:
(avs2)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(avs3)
type: string
readonly: no
required: no
description:
(avs3)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
set simulated line speed (bytes per second) (bin)
type: integer
readonly: no
required: no
minimum: 1
default: 6000
description:
set video size, such as 640x480 or hd720. (bin)
type: string
readonly: no
required: no
description:
set framerate (frames per second) (bin)
type: string
readonly: no
required: no
description:
set pixel format (bitpacked)
type: string
readonly: no
required: no
default: ‘yuv420p’
description:
set frame size (bitpacked)
type: string
readonly: no
required: no
description:
set frame rate (bitpacked)
type: string
readonly: no
required: no
description:
(bonk)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(cavsvideo)
type: string
readonly: no
required: no
description:
(cavsvideo)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(cdxl)
type: integer
readonly: no
required: no
minimum: 8000
default: 11025
description:
(cdxl)
type: string
readonly: no
required: no
description:
Number of frames to read at a time. Higher = faster decoding, lower granularity (codec2)
type: integer
readonly: no
required: no
minimum: 1
default: 1
description:
codec2 mode [mandatory] (codec2raw)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
Number of frames to read at a time. Higher = faster decoding, lower granularity (codec2raw)
type: integer
readonly: no
required: no
minimum: 1
default: 1
description:
enable safe mode (concat)
type: string
readonly: no
required: no
description:
automatically convert bitstream format (concat)
type: string
readonly: no
required: no
description:
output file segment start time and duration as packet metadata (concat)
type: string
readonly: no
required: no
description:
(data)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(dfpwm)
type: integer
readonly: no
required: no
minimum: 0
default: 48000
description:
(dfpwm)
type: string
readonly: no
required: no
description:
(dirac)
type: string
readonly: no
required: no
description:
(dirac)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(dnxhd)
type: string
readonly: no
required: no
description:
(dnxhd)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(dts)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(dvbsub)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(dvbtxt)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
return VP6 alpha in the main video stream (ea)
type: string
readonly: no
required: no
description:
(eac3)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(evc)
type: string
readonly: no
required: no
description:
set the framerate (fits)
type: string
readonly: no
required: no
description:
(flac)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
Allocate streams according to the onMetaData array (flv)
type: string
readonly: no
required: no
description:
Dump full metadata of the onMetadata (flv)
type: string
readonly: no
required: no
description:
Ignore the Size of previous tag (flv)
type: string
readonly: no
required: no
description:
(flv)
type: integer
readonly: no
required: no
minimum: 0
maximum: 255
default: 0
description:
Allocate streams according to the onMetaData array (live_flv)
type: string
readonly: no
required: no
description:
Dump full metadata of the onMetadata (live_flv)
type: string
readonly: no
required: no
description:
Ignore the Size of previous tag (live_flv)
type: string
readonly: no
required: no
description:
(live_flv)
type: integer
readonly: no
required: no
minimum: 0
maximum: 255
default: 0
description:
(g722)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
Bits per G.726 code (g726)
type: integer
readonly: no
required: no
minimum: 2
maximum: 5
default: 4
description:
(g726)
type: integer
readonly: no
required: no
minimum: 0
default: 8000
description:
Bits per G.726 code (g726le)
type: integer
readonly: no
required: no
minimum: 2
maximum: 5
default: 4
description:
(g726le)
type: integer
readonly: no
required: no
minimum: 0
default: 8000
description:
(g729)
type: integer
readonly: no
required: no
minimum: 0
default: 8000
description:
minimum valid delay between frames (in hundredths of second) (gif)
type: integer
readonly: no
required: no
minimum: 0
maximum: 6000
default: 2
description:
maximum valid delay between frames (in hundredths of seconds) (gif)
type: integer
readonly: no
required: no
minimum: 0
maximum: 65535
default: 65535
description:
default delay between frames (in hundredths of second) (gif)
type: integer
readonly: no
required: no
minimum: 0
maximum: 6000
default: 10
description:
ignore loop setting (netscape extension) (gif)
type: string
readonly: no
required: no
description:
(gsm)
type: integer
readonly: no
required: no
minimum: 1
maximum: 65075262
default: 8000
description:
(h261)
type: string
readonly: no
required: no
description:
(h261)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(h263)
type: string
readonly: no
required: no
description:
(h263)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(h264)
type: string
readonly: no
required: no
description:
(h264)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
Low key used for handling CRI HCA files (hca)
type: integer
readonly: no
required: no
minimum: 0
maximum: 4294967295
default: 0
format: 64-bit
description:
High key used for handling CRI HCA files (hca)
type: integer
readonly: no
required: no
minimum: 0
maximum: 4294967295
default: 0
format: 64-bit
description:
Subkey used for handling CRI HCA files (hca)
type: integer
readonly: no
required: no
minimum: 0
maximum: 65535
default: 0
description:
(hevc)
type: string
readonly: no
required: no
description:
(hevc)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
segment index to start live streams at (negative values are from the end) (hls)
type: integer
readonly: no
required: no
default: -3
description:
prefer to use #EXT-X-START if it's in playlist instead of live_start_index (hls)
type: string
readonly: no
required: no
description:
List of file extensions that hls is allowed to access (hls)
type: string
readonly: no
required: no
default: ‘3gp,aac,avi,ac3,eac3,flac,mkv,m3u8,m4a,m4s,m4v,mpg,mov,mp2,mp3,mp4,mpeg,mpegts,ogg,ogv,oga,ts,vob,wav’
description:
Maximum number of times a insufficient list is attempted to be reloaded (hls)
type: integer
readonly: no
required: no
minimum: 0
default: 3
description:
The maximum number of times to load m3u8 when it refreshes without new segments (hls)
type: integer
readonly: no
required: no
minimum: 0
default: 1000
description:
Use persistent HTTP connections (hls)
type: string
readonly: no
required: no
description:
Use multiple HTTP connections for fetching segments (hls)
type: string
readonly: no
required: no
description:
Use HTTP partial requests, 0 = disable, 1 = enable, -1 = auto (hls)
type: string
readonly: no
required: no
description:
Set options for segment demuxer (hls)
type: string
readonly: no
required: no
description:
Maximum number of times to reload a segment on error. (hls)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set simulated line speed (bytes per second) (idf)
type: integer
readonly: no
required: no
minimum: 1
default: 6000
description:
set video size, such as 640x480 or hd720. (idf)
type: string
readonly: no
required: no
description:
set framerate (frames per second) (idf)
type: string
readonly: no
required: no
description:
set pattern type (image2)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
set first number in the sequence (image2)
type: integer
readonly: no
required: no
default: 0
description:
set range for looking at the first sequence number (image2)
type: integer
readonly: no
required: no
minimum: 1
default: 5
description:
set frame timestamp from file's one (image2)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
enable metadata containing input path information (image2)
type: string
readonly: no
required: no
description:
set the video framerate (image2)
type: string
readonly: no
required: no
description:
set video pixel format (image2)
type: string
readonly: no
required: no
description:
set video size (image2)
type: string
readonly: no
required: no
description:
force loop over input file sequence (image2)
type: string
readonly: no
required: no
description:
force frame size in bytes (image2pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (image2pipe)
type: string
readonly: no
required: no
description:
set video pixel format (image2pipe)
type: string
readonly: no
required: no
description:
set video size (image2pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (image2pipe)
type: string
readonly: no
required: no
description:
set pattern type (alias_pix)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
set first number in the sequence (alias_pix)
type: integer
readonly: no
required: no
default: 0
description:
set range for looking at the first sequence number (alias_pix)
type: integer
readonly: no
required: no
minimum: 1
default: 5
description:
set frame timestamp from file's one (alias_pix)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
enable metadata containing input path information (alias_pix)
type: string
readonly: no
required: no
description:
set the video framerate (alias_pix)
type: string
readonly: no
required: no
description:
set video pixel format (alias_pix)
type: string
readonly: no
required: no
description:
set video size (alias_pix)
type: string
readonly: no
required: no
description:
force loop over input file sequence (alias_pix)
type: string
readonly: no
required: no
description:
set pattern type (brender_pix)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
set first number in the sequence (brender_pix)
type: integer
readonly: no
required: no
default: 0
description:
set range for looking at the first sequence number (brender_pix)
type: integer
readonly: no
required: no
minimum: 1
default: 5
description:
set frame timestamp from file's one (brender_pix)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
enable metadata containing input path information (brender_pix)
type: string
readonly: no
required: no
description:
set the video framerate (brender_pix)
type: string
readonly: no
required: no
description:
set video pixel format (brender_pix)
type: string
readonly: no
required: no
description:
set video size (brender_pix)
type: string
readonly: no
required: no
description:
force loop over input file sequence (brender_pix)
type: string
readonly: no
required: no
description:
(ingenient)
type: string
readonly: no
required: no
description:
(ingenient)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(ipu)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
Allocate streams according to the onMetaData array (kux)
type: string
readonly: no
required: no
description:
Dump full metadata of the onMetadata (kux)
type: string
readonly: no
required: no
description:
Ignore the Size of previous tag (kux)
type: string
readonly: no
required: no
description:
(kux)
type: integer
readonly: no
required: no
minimum: 0
maximum: 255
default: 0
description:
(loas)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(m4v)
type: string
readonly: no
required: no
description:
(m4v)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
set the movie frame rate fallback (microdvd)
type: string
readonly: no
required: no
format: numerator/denominator
description:
(mjpeg)
type: string
readonly: no
required: no
description:
(mjpeg)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(mjpeg_2000)
type: string
readonly: no
required: no
description:
(mjpeg_2000)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(mlp)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
allow using absolute path when opening alias, this is a possible security issue (mov,mp4,m4a,3gp,3g2,mj2)
type: string
readonly: no
required: no
description:
Seek each stream individually to the closest point (mov,mp4,m4a,3gp,3g2,mj2)
type: string
readonly: no
required: no
description:
Ignore the edit list atom. (mov,mp4,m4a,3gp,3g2,mj2)
type: string
readonly: no
required: no
description:
Modify the AVIndex according to the editlists. Use this option to decode in the order specified by the edits. (mov,mp4,m4a,3gp,3g2,mj2)
type: string
readonly: no
required: no
description:
(mov,mp4,m4a,3gp,3g2,mj2)
type: string
readonly: no
required: no
description:
use mfra for fragment timestamps (mov,mp4,m4a,3gp,3g2,mj2)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
use tfdt for fragment timestamps (mov,mp4,m4a,3gp,3g2,mj2)
type: string
readonly: no
required: no
description:
Export unrecognized metadata entries (mov,mp4,m4a,3gp,3g2,mj2)
type: string
readonly: no
required: no
description:
Export full XMP metadata (mov,mp4,m4a,3gp,3g2,mj2)
type: string
readonly: no
required: no
description:
Enable external track support. (mov,mp4,m4a,3gp,3g2,mj2)
type: string
readonly: no
required: no
description:
treat offsets above this value as invalid (mov,mp4,m4a,3gp,3g2,mj2)
type: integer
readonly: no
required: no
minimum: 0
maximum: -2147483648
default: -480001
description:
Interleave packets from multiple tracks at demuxer level (mov,mp4,m4a,3gp,3g2,mj2)
type: string
readonly: no
required: no
description:
use table of contents (mp3)
type: string
readonly: no
required: no
description:
set size limit for looking up a new synchronization (mpegts)
type: integer
readonly: no
required: no
minimum: 0
default: 65536
description:
try to fix pts values of dvb teletext streams (mpegts)
type: string
readonly: no
required: no
description:
scan and combine all PMTs (mpegts)
type: string
readonly: no
required: no
description:
skip PMTs for programs not advertised in the PAT (mpegts)
type: string
readonly: no
required: no
description:
re-use streams when PMT's version/pids change (mpegts)
type: string
readonly: no
required: no
description:
maximum size of emitted packet (mpegts)
type: integer
readonly: no
required: no
minimum: 1
maximum: 1073741823
default: 204800
description:
set size limit for looking up a new synchronization (mpegtsraw)
type: integer
readonly: no
required: no
minimum: 0
default: 65536
description:
compute exact PCR for each transport stream packet (mpegtsraw)
type: string
readonly: no
required: no
description:
(mpegvideo)
type: string
readonly: no
required: no
description:
(mpegvideo)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
require MIME boundaries match (mpjpeg)
type: string
readonly: no
required: no
description:
extract eia 608 captions from s436m track (mxf)
type: string
readonly: no
required: no
description:
(obu)
type: string
readonly: no
required: no
description:
(osq)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(alaw)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(alaw)
type: string
readonly: no
required: no
description:
(mulaw)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(mulaw)
type: string
readonly: no
required: no
description:
(vidc)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(vidc)
type: string
readonly: no
required: no
description:
(f64be)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(f64be)
type: string
readonly: no
required: no
description:
(f64le)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(f64le)
type: string
readonly: no
required: no
description:
(f32be)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(f32be)
type: string
readonly: no
required: no
description:
(f32le)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(f32le)
type: string
readonly: no
required: no
description:
(s32be)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(s32be)
type: string
readonly: no
required: no
description:
(s32le)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(s32le)
type: string
readonly: no
required: no
description:
(s24be)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(s24be)
type: string
readonly: no
required: no
description:
(s24le)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(s24le)
type: string
readonly: no
required: no
description:
(s16be)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(s16be)
type: string
readonly: no
required: no
description:
(s16le)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(s16le)
type: string
readonly: no
required: no
description:
(s8)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(s8)
type: string
readonly: no
required: no
description:
(u32be)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(u32be)
type: string
readonly: no
required: no
description:
(u32le)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(u32le)
type: string
readonly: no
required: no
description:
(u24be)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(u24be)
type: string
readonly: no
required: no
description:
(u24le)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(u24le)
type: string
readonly: no
required: no
description:
(u16be)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(u16be)
type: string
readonly: no
required: no
description:
(u16le)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(u16le)
type: string
readonly: no
required: no
description:
(u8)
type: integer
readonly: no
required: no
minimum: 0
default: 44100
description:
(u8)
type: string
readonly: no
required: no
description:
set pixel format (rawvideo)
type: string
readonly: no
required: no
default: ‘yuv420p’
description:
set frame size (rawvideo)
type: string
readonly: no
required: no
description:
set frame rate (rawvideo)
type: string
readonly: no
required: no
description:
set RTP flags (rtp)
type: string
readonly: no
required: no
format: flags
values:
description:
set maximum timeout (in seconds) to wait for incoming connections (rtp)
type: string
readonly: no
required: no
description:
local address (rtp)
type: string
readonly: no
required: no
description:
set media types to accept from the server (rtp)
type: string
readonly: no
required: no
format: flags
values:
description:
set number of packets to buffer for handling of reordered packets (rtp)
type: integer
readonly: no
required: no
minimum: -1
default: -1
description:
Underlying protocol send/receive buffer size (rtp)
type: integer
readonly: no
required: no
minimum: -1
default: -1
description:
do not start playing the stream immediately (rtsp)
type: string
readonly: no
required: no
description:
set RTSP transport protocols (rtsp)
type: string
readonly: no
required: no
format: flags
values:
description:
set RTSP flags (rtsp)
type: string
readonly: no
required: no
format: flags
values:
description:
set media types to accept from the server (rtsp)
type: string
readonly: no
required: no
format: flags
values:
description:
set minimum local UDP port (rtsp)
type: integer
readonly: no
required: no
minimum: 0
maximum: 65535
default: 5000
description:
set maximum local UDP port (rtsp)
type: integer
readonly: no
required: no
minimum: 0
maximum: 65535
default: 65000
description:
set maximum timeout (in seconds) to wait for incoming connections (-1 is infinite, imply flag listen) (rtsp)
type: integer
readonly: no
required: no
default: -1
description:
set timeout (in microseconds) of socket I/O operations (rtsp)
type: integer
readonly: no
required: no
minimum: -2147483648
default: 0
format: 64-bit
description:
set number of packets to buffer for handling of reordered packets (rtsp)
type: integer
readonly: no
required: no
minimum: -1
default: -1
description:
Underlying protocol send/receive buffer size (rtsp)
type: integer
readonly: no
required: no
minimum: -1
default: -1
description:
override User-Agent header (rtsp)
type: string
readonly: no
required: no
default: ‘Lavf61.3.104’
description:
(sbc)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(sbg)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
(sbg)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
(sbg)
type: integer
readonly: no
required: no
minimum: 0
default: 5000000
description:
SDP flags (sdp)
type: string
readonly: no
required: no
format: flags
values:
description:
set maximum timeout (in seconds) to wait for incoming connections (sdp)
type: string
readonly: no
required: no
description:
local address (sdp)
type: string
readonly: no
required: no
description:
set media types to accept from the server (sdp)
type: string
readonly: no
required: no
format: flags
values:
description:
set number of packets to buffer for handling of reordered packets (sdp)
type: integer
readonly: no
required: no
minimum: -1
default: -1
description:
Underlying protocol send/receive buffer size (sdp)
type: integer
readonly: no
required: no
minimum: -1
default: -1
description:
set frame rate (ser)
type: string
readonly: no
required: no
description:
(shn)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(sln)
type: integer
readonly: no
required: no
minimum: 0
default: 8000
description:
(sln)
type: string
readonly: no
required: no
description:
(tak)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
set the start time (offset) of the subtitles, in ms (tedcaptions)
type: integer
readonly: no
required: no
default: 15000
format: 64-bit
description:
(truehd)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
(tty)
type: integer
readonly: no
required: no
minimum: 1
default: 6000
description:
A string describing frame size, such as 640x480 or hd720. (tty)
type: string
readonly: no
required: no
description:
(tty)
type: string
readonly: no
required: no
description:
set frame size (v210)
type: string
readonly: no
required: no
description:
set frame rate (v210)
type: string
readonly: no
required: no
description:
set frame size (v210x)
type: string
readonly: no
required: no
description:
set frame rate (v210x)
type: string
readonly: no
required: no
description:
(vc1)
type: string
readonly: no
required: no
description:
(vc1)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
URI for .sub file (vobsub)
type: string
readonly: no
required: no
description:
(vvc)
type: string
readonly: no
required: no
description:
(vvc)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
max size of single packet (w64)
type: integer
readonly: no
required: no
minimum: 0
maximum: 4194304
default: 0
description:
Ignore length (wav)
type: string
readonly: no
required: no
description:
max size of single packet (wav)
type: integer
readonly: no
required: no
minimum: 0
maximum: 4194304
default: 0
description:
flag indicating that the input is a live file that only has the headers. (webm_dash_manifest)
type: string
readonly: no
required: no
description:
bandwidth of this stream to be specified in the DASH manifest. (webm_dash_manifest)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
Set kind of WebVTT track (webvtt)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
(wsd)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
set simulated line speed (bytes per second) (xbin)
type: integer
readonly: no
required: no
minimum: 1
default: 6000
description:
set video size, such as 640x480 or hd720. (xbin)
type: string
readonly: no
required: no
description:
set framerate (frames per second) (xbin)
type: string
readonly: no
required: no
description:
force frame size in bytes (bmp_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (bmp_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (bmp_pipe)
type: string
readonly: no
required: no
description:
set video size (bmp_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (bmp_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (cri_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (cri_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (cri_pipe)
type: string
readonly: no
required: no
description:
set video size (cri_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (cri_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (dds_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (dds_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (dds_pipe)
type: string
readonly: no
required: no
description:
set video size (dds_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (dds_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (dpx_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (dpx_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (dpx_pipe)
type: string
readonly: no
required: no
description:
set video size (dpx_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (dpx_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (exr_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (exr_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (exr_pipe)
type: string
readonly: no
required: no
description:
set video size (exr_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (exr_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (gem_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (gem_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (gem_pipe)
type: string
readonly: no
required: no
description:
set video size (gem_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (gem_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (gif_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (gif_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (gif_pipe)
type: string
readonly: no
required: no
description:
set video size (gif_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (gif_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (hdr_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (hdr_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (hdr_pipe)
type: string
readonly: no
required: no
description:
set video size (hdr_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (hdr_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (j2k_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (j2k_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (j2k_pipe)
type: string
readonly: no
required: no
description:
set video size (j2k_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (j2k_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (jpeg_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (jpeg_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (jpeg_pipe)
type: string
readonly: no
required: no
description:
set video size (jpeg_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (jpeg_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (jpegls_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (jpegls_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (jpegls_pipe)
type: string
readonly: no
required: no
description:
set video size (jpegls_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (jpegls_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (jpegxl_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (jpegxl_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (jpegxl_pipe)
type: string
readonly: no
required: no
description:
set video size (jpegxl_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (jpegxl_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (pam_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (pam_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (pam_pipe)
type: string
readonly: no
required: no
description:
set video size (pam_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (pam_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (pbm_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (pbm_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (pbm_pipe)
type: string
readonly: no
required: no
description:
set video size (pbm_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (pbm_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (pcx_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (pcx_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (pcx_pipe)
type: string
readonly: no
required: no
description:
set video size (pcx_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (pcx_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (pfm_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (pfm_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (pfm_pipe)
type: string
readonly: no
required: no
description:
set video size (pfm_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (pfm_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (pgmyuv_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (pgmyuv_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (pgmyuv_pipe)
type: string
readonly: no
required: no
description:
set video size (pgmyuv_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (pgmyuv_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (pgm_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (pgm_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (pgm_pipe)
type: string
readonly: no
required: no
description:
set video size (pgm_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (pgm_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (pgx_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (pgx_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (pgx_pipe)
type: string
readonly: no
required: no
description:
set video size (pgx_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (pgx_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (phm_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (phm_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (phm_pipe)
type: string
readonly: no
required: no
description:
set video size (phm_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (phm_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (photocd_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (photocd_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (photocd_pipe)
type: string
readonly: no
required: no
description:
set video size (photocd_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (photocd_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (pictor_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (pictor_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (pictor_pipe)
type: string
readonly: no
required: no
description:
set video size (pictor_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (pictor_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (png_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (png_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (png_pipe)
type: string
readonly: no
required: no
description:
set video size (png_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (png_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (ppm_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (ppm_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (ppm_pipe)
type: string
readonly: no
required: no
description:
set video size (ppm_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (ppm_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (psd_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (psd_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (psd_pipe)
type: string
readonly: no
required: no
description:
set video size (psd_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (psd_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (qdraw_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (qdraw_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (qdraw_pipe)
type: string
readonly: no
required: no
description:
set video size (qdraw_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (qdraw_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (qoi_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (qoi_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (qoi_pipe)
type: string
readonly: no
required: no
description:
set video size (qoi_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (qoi_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (sgi_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (sgi_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (sgi_pipe)
type: string
readonly: no
required: no
description:
set video size (sgi_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (sgi_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (svg_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (svg_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (svg_pipe)
type: string
readonly: no
required: no
description:
set video size (svg_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (svg_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (sunrast_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (sunrast_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (sunrast_pipe)
type: string
readonly: no
required: no
description:
set video size (sunrast_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (sunrast_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (tiff_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (tiff_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (tiff_pipe)
type: string
readonly: no
required: no
description:
set video size (tiff_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (tiff_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (vbn_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (vbn_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (vbn_pipe)
type: string
readonly: no
required: no
description:
set video size (vbn_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (vbn_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (webp_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (webp_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (webp_pipe)
type: string
readonly: no
required: no
description:
set video size (webp_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (webp_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (xbm_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (xbm_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (xbm_pipe)
type: string
readonly: no
required: no
description:
set video size (xbm_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (xbm_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (xpm_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (xpm_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (xpm_pipe)
type: string
readonly: no
required: no
description:
set video size (xpm_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (xpm_pipe)
type: string
readonly: no
required: no
description:
force frame size in bytes (xwd_pipe)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
set the video framerate (xwd_pipe)
type: string
readonly: no
required: no
description:
set video pixel format (xwd_pipe)
type: string
readonly: no
required: no
description:
set video size (xwd_pipe)
type: string
readonly: no
required: no
description:
force loop over input file sequence (xwd_pipe)
type: string
readonly: no
required: no
description:
(alsa)
type: integer
readonly: no
required: no
minimum: 1
default: 48000
description:
(alsa)
type: integer
readonly: no
required: no
minimum: 1
default: 2
description:
(fbdev)
type: string
readonly: no
required: no
description:
DRM device path (kmsgrab)
type: string
readonly: no
required: no
default: ‘/dev/dri/card0’
description:
Pixel format for framebuffer (kmsgrab)
type: string
readonly: no
required: no
description:
DRM format modifier for framebuffer (kmsgrab)
type: integer
readonly: no
required: no
minimum: 0
default: 72057594037927935
format: 64-bit
description:
CRTC ID to define capture source (kmsgrab)
type: integer
readonly: no
required: no
minimum: 0
maximum: 4294967295
default: 0
format: 64-bit
description:
Plane ID to define capture source (kmsgrab)
type: integer
readonly: no
required: no
minimum: 0
maximum: 4294967295
default: 0
format: 64-bit
description:
Framerate to capture at (kmsgrab)
type: string
readonly: no
required: no
format: numerator/denominator
description:
set libavfilter graph (lavfi)
type: string
readonly: no
required: no
description:
set libavfilter graph filename (lavfi)
type: string
readonly: no
required: no
description:
dump graph to stderr (lavfi)
type: string
readonly: no
required: no
description:
(oss)
type: integer
readonly: no
required: no
minimum: 1
default: 48000
description:
(oss)
type: integer
readonly: no
required: no
minimum: 1
default: 2
description:
set PulseAudio server (pulse)
type: string
readonly: no
required: no
description:
set application name (pulse)
type: string
readonly: no
required: no
default: ‘Lavf61.3.104’
description:
set stream description (pulse)
type: string
readonly: no
required: no
default: ‘record’
description:
set sample rate in Hz (pulse)
type: integer
readonly: no
required: no
minimum: 1
default: 48000
description:
set number of audio channels (pulse)
type: integer
readonly: no
required: no
minimum: 1
default: 2
description:
set number of bytes per frame (pulse)
type: integer
readonly: no
required: no
minimum: 1
default: 1024
description:
set buffering size, affects latency and cpu usage (pulse)
type: integer
readonly: no
required: no
minimum: -1
default: -1
description:
set the initial pts using the current time (pulse)
type: integer
readonly: no
required: no
minimum: -1
maximum: 1
default: 1
description:
(sndio)
type: integer
readonly: no
required: no
minimum: 1
default: 48000
description:
(sndio)
type: integer
readonly: no
required: no
minimum: 1
default: 2
description:
set TV standard, used only by analog frame grabber (video4linux2,v4l2)
type: string
readonly: no
required: no
description:
set TV channel, used only by frame grabber (video4linux2,v4l2)
type: integer
readonly: no
required: no
minimum: -1
default: -1
description:
set frame size (video4linux2,v4l2)
type: string
readonly: no
required: no
description:
set preferred pixel format (video4linux2,v4l2)
type: string
readonly: no
required: no
description:
set preferred pixel format (for raw video) or codec name (video4linux2,v4l2)
type: string
readonly: no
required: no
description:
set frame rate (video4linux2,v4l2)
type: string
readonly: no
required: no
description:
list available formats and exit (video4linux2,v4l2)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
list supported standards and exit (video4linux2,v4l2)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
set type of timestamps for grabbed frames (video4linux2,v4l2)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
set type of timestamps for grabbed frames (video4linux2,v4l2)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
use libv4l2 (v4l-utils) conversion functions (video4linux2,v4l2)
type: string
readonly: no
required: no
description:
Window to capture. (x11grab)
type: integer
readonly: no
required: no
minimum: 0
maximum: -2147483648
default: 0
description:
Initial x coordinate. (x11grab)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
Initial y coordinate. (x11grab)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
Initial x coordinate. (x11grab)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
Initial y coordinate. (x11grab)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
A string describing frame size, such as 640x480 or hd720. (x11grab)
type: string
readonly: no
required: no
description:
(x11grab)
type: string
readonly: no
required: no
default: ‘ntsc’
description:
Draw the mouse pointer. (x11grab)
type: integer
readonly: no
required: no
minimum: 0
maximum: 1
default: 1
description:
Move the grabbing region when the mouse pointer reaches within specified amount of pixels to the edge of region. (x11grab)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
Show the grabbing region. (x11grab)
type: integer
readonly: no
required: no
minimum: 0
maximum: 1
default: 0
description:
Set the region border thickness. (x11grab)
type: integer
readonly: no
required: no
minimum: 1
maximum: 128
default: 3
description:
Select the grabbing region graphically using the pointer. (x11grab)
type: string
readonly: no
required: no
type: string
readonly: no
required: no
format: flags
values:
type: string
readonly: no
required: no
format: flags
values:
description:
Export metadata as side data
type: string
readonly: no
required: no
format: flags
values:
description:
set audio sampling rate (in Hz)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
work around not autodetected encoder bugs
type: string
readonly: no
required: no
format: flags
values:
description:
how strictly to follow the standards
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
set error detection flags
type: string
readonly: no
required: no
format: flags
values:
description:
select IDCT implementation
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
set error concealment strategy
type: string
readonly: no
required: no
format: flags
values:
description:
print specific debug info
type: string
readonly: no
required: no
format: flags
values:
description:
set the number of threads
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
number of macroblock rows at the top which are skipped
type: integer
readonly: no
required: no
default: 0
description:
number of macroblock rows at the bottom which are skipped
type: integer
readonly: no
required: no
default: 0
description:
decode at 1= 1/2, 2=1/4, 3=1/8 resolutions
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
skip loop filtering process for the selected frames
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
skip IDCT/dequantization for the selected frames
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
skip decoding for the selected frames
type: string
readonly: no
required: no
format: integer or keyword
values:
type: string
readonly: no
required: no
type: integer
readonly: no
required: no
minimum: 1
default: 1
description:
color primaries
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
color transfer characteristics
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
color space
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
color range
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
chroma sample location
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
select multithreading type
type: string
readonly: no
required: no
format: flags
values:
description:
sample format audio decoders should prefer
type: string
readonly: no
required: no
description:
set input text subtitles character encoding
type: string
readonly: no
required: no
description:
set input text subtitles character encoding mode
type: string
readonly: no
required: no
format: flags
values:
type: string
readonly: no
required: no
description:
Skip processing alpha
type: string
readonly: no
required: no
description:
Field order
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
set information dump field separator
type: string
readonly: no
required: no
description:
List of decoders that are allowed to be used
type: string
readonly: no
required: no
description:
Maximum number of pixels
type: integer
readonly: no
required: no
minimum: 0
maximum: 2147483647
default: 2147483647
format: 64-bit
description:
Maximum number of samples
type: integer
readonly: no
required: no
minimum: 0
maximum: 2147483647
default: 2147483647
format: 64-bit
type: string
readonly: no
required: no
format: flags
values:
description:
Number of extra hardware frames to allocate for the user
type: integer
readonly: no
required: no
minimum: -1
default: -1
description:
Percentage of damaged samples to discard a frame
type: integer
readonly: no
required: no
minimum: 0
maximum: 100
default: 95
description:
Comma-separated list of side data types for which user-supplied (container) data is preferred over coded bytestream
type: string
readonly: no
required: no
values:
description:
Set the decoding layer (exr)
type: string
readonly: no
required: no
default: ‘’
description:
Set the decoding part (exr)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
Set the float gamma value when decoding (exr)
type: float
readonly: no
required: no
minimum: 0.001
default: 1
description:
color transfer characteristics to apply to EXR linear input (exr)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
skip the cursor (fic)
type: string
readonly: no
required: no
description:
value that is used to replace BLANK pixels in data array (fits)
type: integer
readonly: no
required: no
minimum: 0
maximum: 65535
default: 0
description:
Change field order (frwu)
type: string
readonly: no
required: no
description:
color value (ARGB) that is used instead of transparent color (gif)
type: integer
readonly: no
required: no
minimum: 0
maximum: -2147483648
default: 16777215
description:
Number of buffers in the output context (h263_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 16
description:
Number of buffers in the capture context (h263_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 20
description:
is avc (h264)
type: string
readonly: no
required: no
description:
nal_length_size (h264)
type: integer
readonly: no
required: no
minimum: 0
maximum: 4
default: 0
description:
Enable error resilience on damaged frames (unsafe) (h264)
type: string
readonly: no
required: no
description:
Assume this x264 version if no x264 version found in any SEI (h264)
type: integer
readonly: no
required: no
minimum: -1
default: -1
description:
Do not return gray gap frames (h264)
type: string
readonly: no
required: no
description:
Avoid using gray gap frames as references (h264)
type: string
readonly: no
required: no
description:
Number of buffers in the output context (h264_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 16
description:
Number of buffers in the capture context (h264_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 20
description:
Apply default display window from VUI (hevc)
type: string
readonly: no
required: no
description:
stricly apply default display window size (hevc)
type: string
readonly: no
required: no
description:
Number of buffers in the output context (hevc_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 16
description:
Number of buffers in the capture context (hevc_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 20
description:
Lower the decoding resolution by a power of two (jpeg2000)
type: integer
readonly: no
required: no
minimum: 0
maximum: 33
default: 0
description:
Use external huffman table. (mjpeg)
type: string
readonly: no
required: no
description:
extract a specific Closed Captions format (mpeg2video)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
Number of buffers in the output context (mpeg4_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 16
description:
Number of buffers in the capture context (mpeg4_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 20
description:
Number of buffers in the output context (mpeg1_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 16
description:
Number of buffers in the capture context (mpeg1_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 20
description:
Number of buffers in the output context (mpeg2_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 16
description:
Number of buffers in the capture context (mpeg2_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 20
description:
Lower the decoding resolution by a power of two (photocd)
type: integer
readonly: no
required: no
minimum: 0
maximum: 4
default: 0
description:
skip the cursor (rasc)
type: string
readonly: no
required: no
description:
top field first (rawvideo)
type: string
readonly: no
required: no
description:
Chooses what to do with NON-PCM (s302m)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
decode subimage instead if available (tiff)
type: string
readonly: no
required: no
description:
decode embedded thumbnail subimage instead if available (tiff)
type: string
readonly: no
required: no
description:
page number of multi-page image to decode (starting from 1) (tiff)
type: integer
readonly: no
required: no
minimum: 0
maximum: 65535
default: 0
description:
Custom V210 stride (v210)
type: integer
readonly: no
required: no
minimum: -1
default: 0
description:
Number of buffers in the output context (vc1_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 16
description:
Number of buffers in the capture context (vc1_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 20
description:
Number of buffers in the output context (vp8_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 16
description:
Number of buffers in the capture context (vp8_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 20
description:
Number of buffers in the output context (vp9_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 16
description:
Number of buffers in the capture context (vp9_v4l2m2m)
type: integer
readonly: no
required: no
minimum: 2
default: 20
description:
Select the channel to decode for dual mono (aac)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
Order in which the channels are to be exported (aac)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
Select the channel to decode for dual mono (aac_fixed)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
Order in which the channels are to be exported (aac_fixed)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
enable consistent noise generation (ac3)
type: string
readonly: no
required: no
description:
percentage of dynamic range compression to apply (ac3)
type: float
readonly: no
required: no
minimum: 0
maximum: 6
default: 1
description:
enable heavy dynamic range compression (ac3)
type: string
readonly: no
required: no
description:
target level in -dBFS (0 not applied) (ac3)
type: integer
readonly: no
required: no
minimum: -31
maximum: 0
default: 0
description:
Request a specific channel layout from the decoder (ac3)
type: string
readonly: no
required: no
description:
enable consistent noise generation (ac3_fixed)
type: string
readonly: no
required: no
description:
percentage of dynamic range compression to apply (ac3_fixed)
type: float
readonly: no
required: no
minimum: 0
maximum: 6
default: 1
description:
enable heavy dynamic range compression (ac3_fixed)
type: string
readonly: no
required: no
description:
Request a specific channel layout from the decoder (ac3_fixed)
type: string
readonly: no
required: no
description:
Force non-standard decoding process (alac)
type: string
readonly: no
required: no
description:
maximum number of samples decoded per call (ape)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
Decode core only without extensions (dca)
type: string
readonly: no
required: no
description:
Order in which the channels are to be exported (dca)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
Request a specific channel layout from the decoder (dca)
type: string
readonly: no
required: no
description:
Order in which the channels are to be exported (dolby_e)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
enable consistent noise generation (eac3)
type: string
readonly: no
required: no
description:
percentage of dynamic range compression to apply (eac3)
type: float
readonly: no
required: no
minimum: 0
maximum: 6
default: 1
description:
enable heavy dynamic range compression (eac3)
type: string
readonly: no
required: no
description:
target level in -dBFS (0 not applied) (eac3)
type: integer
readonly: no
required: no
minimum: -31
maximum: 0
default: 0
description:
Request a specific channel layout from the decoder (eac3)
type: string
readonly: no
required: no
description:
enable postfilter (evrc)
type: string
readonly: no
required: no
description:
emulate old buggy lavc behavior (flac)
type: string
readonly: no
required: no
description:
enable postfilter (g723_1)
type: string
readonly: no
required: no
description:
Request a specific channel layout from the decoder (mlp)
type: string
readonly: no
required: no
description:
Apply intensity stereo phase inversion (opus)
type: string
readonly: no
required: no
description:
Request a specific channel layout from the decoder (truehd)
type: string
readonly: no
required: no
description:
Set decoding password (tta)
type: string
readonly: no
required: no
description:
Bits per G722 codeword (g722)
type: integer
readonly: no
required: no
minimum: 6
maximum: 8
default: 8
description:
emit subtitle events as they are decoded for real-time display (cc_dec)
type: string
readonly: no
required: no
description:
minimum elapsed time between emitting real-time subtitle events (cc_dec)
type: integer
readonly: no
required: no
minimum: 0
maximum: 500
default: 200
description:
select data field (cc_dec)
type: string
readonly: no
required: no
format: integer or keyword
values:
description:
compute end of time using pts or timeout (dvbsub)
type: string
readonly: no
required: no
description:
compute clut when not available(-1) or only once (-2) or always(1) or never(0) (dvbsub)
type: string
readonly: no
required: no
description:
(dvbsub)
type: integer
readonly: no
required: no
minimum: -1
maximum: 63
default: -1
description:
set the global palette (dvdsub)
type: string
readonly: no
required: no
description:
obtain the global palette from .IFO file (dvdsub)
type: string
readonly: no
required: no
description:
Only show forced subtitles (dvdsub)
type: string
readonly: no
required: no
description:
Frame width, usually video width (mov_text)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
Frame height, usually video height (mov_text)
type: integer
readonly: no
required: no
minimum: 0
default: 0
description:
Only show forced subtitles (pgssub)
type: string
readonly: no
required: no
description:
Set if ASS tags must be escaped (pjs)
type: string
readonly: no
required: no
description:
Set if ASS tags must be escaped (stl)
type: string
readonly: no
required: no
description:
Set if ASS tags must be escaped (subviewer1)
type: string
readonly: no
required: no
description:
Set if ASS tags must be escaped (text)
type: string
readonly: no
required: no
description:
Set if ASS tags must be escaped (vplayer)
type: string
readonly: no
required: no
description:
Tile threads (libdav1d)
type: integer
readonly: no
required: no
minimum: 0
maximum: 256
default: 0
description:
Frame threads (libdav1d)
type: integer
readonly: no
required: no
minimum: 0
maximum: 256
default: 0
description:
Max frame delay (libdav1d)
type: integer
readonly: no
required: no
minimum: 0
maximum: 256
default: 0
description:
Apply Film Grain (libdav1d)
type: string
readonly: no
required: no
description:
Select an operating point of the scalable bitstream (libdav1d)
type: integer
readonly: no
required: no
minimum: -1
maximum: 31
default: -1
description:
Output all spatial layers (libdav1d)
type: string
readonly: no
required: no
description:
Apply intensity stereo phase inversion (libopus)
type: string
readonly: no
required: no
description:
Select an operating point of the scalable bitstream (av1)
type: integer
readonly: no
required: no
minimum: 0
maximum: 31
default: 0
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