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ffplay(1)

Aliases: avplay(1)

ffmpeg

Tools for transcoding, streaming and playing of multimedia files

ffmpeg-4

Library for working with various multimedia formats

ffmpeg-3

Library for working with various multimedia formats

NAME

ffplay - FFplay media player

SYNOPSIS

ffplay [options] [input_url]

DESCRIPTION

FFplay is a very simple and portable media player using the FFmpeg libraries and the SDL library. It is mostly used as a testbed for the various FFmpeg APIs.

OPTIONS

All the numerical options, if not specified otherwise, accept a string representing a number as input, which may be followed by one of the SI unit prefixes, for example: ’K’, ’M’, or ’G’.
If ’i’ is appended to the SI unit prefix, the complete prefix will be interpreted as a unit prefix for binary multiples, which are based on powers of 1024 instead of powers of 1000. Appending ’B’ to the SI unit prefix multiplies the value by 8. This allows using, for example: ’KB’, ’MiB’, ’G’ and ’B’ as number suffixes.
Options which do not take arguments are boolean options, and set the corresponding value to true. They can be set to false by prefixing the option name with no. For example using -nofoo will set the boolean option with name foo to false.

Stream specifiers

Some options are applied per-stream, e.g. bitrate or codec. Stream specifiers are used to precisely specify which stream(s) a given option belongs to.
A stream specifier is a string generally appended to the option name and separated from it by a colon. E.g. -codec:a:1 ac3 contains the a:1 stream specifier, which matches the second audio stream. Therefore, it would select the ac3 codec for the second audio stream.
A stream specifier can match several streams, so that the option is applied to all of them. E.g. the stream specifier in -b:a 128k matches all audio streams.
An empty stream specifier matches all streams. For example, -codec copy or -codec: copy would copy all the streams without reencoding.
Possible forms of stream specifiers are:
stream_index Matches the stream with this index. E.g. -threads:1 4 would set the thread count for the second stream to 4.
stream_type[:stream_index] stream_type is one of following: ’v’ or ’V’ for video, ’a’ for audio, ’s’ for subtitle, ’d’ for data, and ’t’ for attachments. ’v’ matches all video streams, ’V’ only matches video streams which are not attached pictures, video thumbnails or cover arts. If stream_index is given, then it matches stream number stream_index of this type. Otherwise, it matches all streams of this type.
p:program_id[:stream_index] or p:program_id[:stream_type[:stream_index]] or p:program_id:m:key[:value] In first version, if stream_index is given, then it matches the stream with number stream_index in the program with the id program_id. Otherwise, it matches all streams in the program. In the second version, stream_type is one of following: ’v’ for video, ’a’ for audio, ’s’ for subtitle, ’d’ for data. If stream_index is also given, then it matches stream number stream_index of this type in the program with the id program_id. Otherwise, if only stream_type is given, it matches all streams of this type in the program with the id program_id. In the third version matches streams in the program with the id program_id with the metadata tag key having the specified value. If value is not given, matches streams that contain the given tag with any value.
#stream_id or i:stream_id Match the stream by stream id (e.g. PID in MPEG-TS container).
m:key[:value] Matches streams with the metadata tag key having the specified value. If value is not given, matches streams that contain the given tag with any value.
u Matches streams with usable configuration, the codec must be defined and the essential information such as video dimension or audio sample rate must be present.
Note that in ffmpeg, matching by metadata will only work properly for input files.

Generic options

These options are shared amongst the ff* tools.
-L Show license.
-h, -?, -help, --help [arg] Show help. An optional parameter may be specified to print help about a specific item. If no argument is specified, only basic (non advanced) tool options are shown.
Possible values of arg are:
long Print advanced tool options in addition to the basic tool options.
full Print complete list of options, including shared and private options for encoders, decoders, demuxers, muxers, filters, etc.
decoder=decoder_name Print detailed information about the decoder named decoder_name. Use the -decoders option to get a list of all decoders.
encoder=encoder_name Print detailed information about the encoder named encoder_name. Use the -encoders option to get a list of all encoders.
demuxer=demuxer_name Print detailed information about the demuxer named demuxer_name. Use the -formats option to get a list of all demuxers and muxers.
muxer=muxer_name Print detailed information about the muxer named muxer_name. Use the -formats option to get a list of all muxers and demuxers.
filter=filter_name Print detailed information about the filter name filter_name. Use the -filters option to get a list of all filters.
-version Show version.
-formats Show available formats (including devices).
-demuxers Show available demuxers.
-muxers Show available muxers.
-devices Show available devices.
-codecs Show all codecs known to libavcodec.
Note that the term ’codec’ is used throughout this documentation as a shortcut for what is more correctly called a media bitstream format.
-decoders Show available decoders.
-encoders Show all available encoders.
-bsfs Show available bitstream filters.
-protocols Show available protocols.
-filters Show available libavfilter filters.
-pix_fmts Show available pixel formats.
-sample_fmts Show available sample formats.
-layouts Show channel names and standard channel layouts.
-colors Show recognized color names.
-sources device[,opt1=val1[,opt2=val2]...] Show autodetected sources of the input device. Some devices may provide system-dependent source names that cannot be autodetected. The returned list cannot be assumed to be always complete.
        ffmpeg -sources pulse,server=192.168.0.4

-sinks device[,opt1=val1[,opt2=val2]...] Show autodetected sinks of the output device. Some devices may provide system-dependent sink names that cannot be autodetected. The returned list cannot be assumed to be always complete.
        ffmpeg -sinks pulse,server=192.168.0.4

-loglevel [flags+]loglevel | -v [flags+]loglevel Set logging level and flags used by the library.
The optional flags prefix can consist of the following values:
repeat Indicates that repeated log output should not be compressed to the first line and the Last message repeated n times line will be omitted.
level Indicates that log output should add a [level] prefix to each message line. This can be used as an alternative to log coloring, e.g. when dumping the log to file.
Flags can also be used alone by adding a ’+’/’-’ prefix to set/reset a single flag without affecting other flags or changing loglevel. When setting both flags and loglevel, a ’+’ separator is expected between the last flags value and before loglevel.
loglevel is a string or a number containing one of the following values:
quiet, -8 Show nothing at all; be silent.
panic, 0 Only show fatal errors which could lead the process to crash, such as an assertion failure. This is not currently used for anything.
fatal, 8 Only show fatal errors. These are errors after which the process absolutely cannot continue.
error, 16 Show all errors, including ones which can be recovered from.
warning, 24 Show all warnings and errors. Any message related to possibly incorrect or unexpected events will be shown.
info, 32 Show informative messages during processing. This is in addition to warnings and errors. This is the default value.
verbose, 40 Same as info, except more verbose.
debug, 48 Show everything, including debugging information.
trace, 56
For example to enable repeated log output, add the level prefix, and set loglevel to verbose:
        ffmpeg -loglevel repeat+level+verbose -i input output

Another example that enables repeated log output without affecting current state of level prefix flag or loglevel:
        ffmpeg [...] -loglevel +repeat

By default the program logs to stderr. If coloring is supported by the terminal, colors are used to mark errors and warnings. Log coloring can be disabled setting the environment variable AV_LOG_FORCE_NOCOLOR or NO_COLOR, or can be forced setting the environment variable AV_LOG_FORCE_COLOR. The use of the environment variable NO_COLOR is deprecated and will be dropped in a future FFmpeg version.
-report Dump full command line and console output to a file named program-YYYYMMDD-HHMMSS.log in the current directory. This file can be useful for bug reports. It also implies -loglevel verbose.
Setting the environment variable FFREPORT to any value has the same effect. If the value is a ’:’-separated key=value sequence, these options will affect the report; option values must be escaped if they contain special characters or the options delimiter ’:’ (see the ‘‘Quoting and escaping’’ section in the ffmpeg-utils manual).
The following options are recognized:
file set the file name to use for the report; %p is expanded to the name of the program, %t is expanded to a timestamp, %% is expanded to a plain %
level set the log verbosity level using a numerical value (see -loglevel).
For example, to output a report to a file named ffreport.log using a log level of 32 (alias for log level info):
        FFREPORT=file=ffreport.log:level=32 ffmpeg -i input output

Errors in parsing the environment variable are not fatal, and will not appear in the report.
-hide_banner Suppress printing banner.
All FFmpeg tools will normally show a copyright notice, build options and library versions. This option can be used to suppress printing this information.
-cpuflags flags (global) Allows setting and clearing cpu flags. This option is intended for testing. Do not use it unless you know what you’re doing.
        ffmpeg -cpuflags -sse+mmx ...
        ffmpeg -cpuflags mmx ...
        ffmpeg -cpuflags 0 ...

Possible flags for this option are:
x86
mmx
mmxext
sse
sse2
sse2slow
sse3
sse3slow
ssse3
atom
sse4.1
sse4.2
avx
avx2
xop
fma3
fma4
3dnow
3dnowext
bmi1
bmi2
cmov
ARM
armv5te
armv6
armv6t2
vfp
vfpv3
neon
setend
AArch64
armv8
vfp
neon
PowerPC
altivec
Specific Processors
pentium2
pentium3
pentium4
k6
k62
athlon
athlonxp
k8

AVOptions

These options are provided directly by the libavformat, libavdevice and libavcodec libraries. To see the list of available AVOptions, use the -help option. They are separated into two categories:
generic These options can be set for any container, codec or device. Generic options are listed under AVFormatContext options for containers/devices and under AVCodecContext options for codecs.
private These options are specific to the given container, device or codec. Private options are listed under their corresponding containers/devices/codecs.
For example to write an ID3v2.3 header instead of a default ID3v2.4 to an MP3 file, use the id3v2_version private option of the MP3 muxer:
        ffmpeg -i input.flac -id3v2_version 3 out.mp3

All codec AVOptions are per-stream, and thus a stream specifier should be attached to them.
Note: the -nooption syntax cannot be used for boolean AVOptions, use -option 0/-option 1.
Note: the old undocumented way of specifying per-stream AVOptions by prepending v/a/s to the options name is now obsolete and will be removed soon.

Main options

-x width Force displayed width.
-y height Force displayed height.
-s size Set frame size (WxH or abbreviation), needed for videos which do not contain a header with the frame size like raw YUV. This option has been deprecated in favor of private options, try -video_size.
-fs Start in fullscreen mode.
-an Disable audio.
-vn Disable video.
-sn Disable subtitles.
-ss pos Seek to pos. Note that in most formats it is not possible to seek exactly, so ffplay will seek to the nearest seek point to pos.
pos must be a time duration specification, see the Time duration section in the ffmpeg-utils(1) manual.
-t duration Play duration seconds of audio/video.
duration must be a time duration specification, see the Time duration section in the ffmpeg-utils(1) manual.
-bytes Seek by bytes.
-seek_interval Set custom interval, in seconds, for seeking using left/right keys. Default is 10 seconds.
-nodisp Disable graphical display.
-noborder Borderless window.
-volume Set the startup volume. 0 means silence, 100 means no volume reduction or amplification. Negative values are treated as 0, values above 100 are treated as 100.
-f fmt Force format.
-window_title title Set window title (default is the input filename).
-left title Set the x position for the left of the window (default is a centered window).
-top title Set the y position for the top of the window (default is a centered window).
-loop number Loops movie playback <number> times. 0 means forever.
-showmode mode Set the show mode to use. Available values for mode are:
0, video show video
1, waves show audio waves
2, rdft show audio frequency band using RDFT ((Inverse) Real Discrete Fourier Transform)
Default value is video, if video is not present or cannot be played rdft is automatically selected.
You can interactively cycle through the available show modes by pressing the key w.
-vf filtergraph Create the filtergraph specified by filtergraph and use it to filter the video stream.
filtergraph is a description of the filtergraph to apply to the stream, and must have a single video input and a single video output. In the filtergraph, the input is associated to the label in, and the output to the label out. See the ffmpeg-filters manual for more information about the filtergraph syntax.
You can specify this parameter multiple times and cycle through the specified filtergraphs along with the show modes by pressing the key w.
-af filtergraph filtergraph is a description of the filtergraph to apply to the input audio. Use the option -filters to show all the available filters (including sources and sinks).
-i input_url Read input_url.

Advanced options

-pix_fmt format Set pixel format. This option has been deprecated in favor of private options, try -pixel_format.
-stats Print several playback statistics, in particular show the stream duration, the codec parameters, the current position in the stream and the audio/video synchronisation drift. It is on by default, to explicitly disable it you need to specify -nostats.
-fast Non-spec-compliant optimizations.
-genpts Generate pts.
-sync type Set the master clock to audio (type=audio), video (type=video) or external (type=ext). Default is audio. The master clock is used to control audio-video synchronization. Most media players use audio as master clock, but in some cases (streaming or high quality broadcast) it is necessary to change that. This option is mainly used for debugging purposes.
-ast audio_stream_specifier Select the desired audio stream using the given stream specifier. The stream specifiers are described in the Stream specifiers chapter. If this option is not specified, the best audio stream is selected in the program of the already selected video stream.
-vst video_stream_specifier Select the desired video stream using the given stream specifier. The stream specifiers are described in the Stream specifiers chapter. If this option is not specified, the best video stream is selected.
-sst subtitle_stream_specifier Select the desired subtitle stream using the given stream specifier. The stream specifiers are described in the Stream specifiers chapter. If this option is not specified, the best subtitle stream is selected in the program of the already selected video or audio stream.
-autoexit Exit when video is done playing.
-exitonkeydown Exit if any key is pressed.
-exitonmousedown Exit if any mouse button is pressed.
-codec:media_specifier codec_name Force a specific decoder implementation for the stream identified by media_specifier, which can assume the values a (audio), v (video), and s subtitle.
-acodec codec_name Force a specific audio decoder.
-vcodec codec_name Force a specific video decoder.
-scodec codec_name Force a specific subtitle decoder.
-autorotate Automatically rotate the video according to file metadata. Enabled by default, use -noautorotate to disable it.
-framedrop Drop video frames if video is out of sync. Enabled by default if the master clock is not set to video. Use this option to enable frame dropping for all master clock sources, use -noframedrop to disable it.
-infbuf Do not limit the input buffer size, read as much data as possible from the input as soon as possible. Enabled by default for realtime streams, where data may be dropped if not read in time. Use this option to enable infinite buffers for all inputs, use -noinfbuf to disable it.

While playing

q, ESC Quit.
f Toggle full screen.
p, SPC Pause.
m Toggle mute.
9, 0 Decrease and increase volume respectively.
/, * Decrease and increase volume respectively.
a Cycle audio channel in the current program.
v Cycle video channel.
t Cycle subtitle channel in the current program.
c Cycle program.
w Cycle video filters or show modes.
s Step to the next frame.
Pause if the stream is not already paused, step to the next video frame, and pause.
left/right Seek backward/forward 10 seconds.
down/up Seek backward/forward 1 minute.
page down/page up Seek to the previous/next chapter. or if there are no chapters Seek backward/forward 10 minutes.
right mouse click Seek to percentage in file corresponding to fraction of width.
left mouse double-click Toggle full screen.

AUTHORS

The FFmpeg developers.
For details about the authorship, see the Git history of the project (git://source.ffmpeg.org/ffmpeg), e.g. by typing the command git log in the FFmpeg source directory, or browsing the online repository at <http://source.ffmpeg.org>.
Maintainers for the specific components are listed in the file MAINTAINERS in the source code tree.
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