FFPLAY(1)							     FFPLAY(1)


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.

       Options that take arguments support a special syntax where the argument
       given on the command line is interpreted as a path to the file from
       which the actual argument value is loaded. To use this feature, add a
       forward slash '/' immediately before the option name (after the leading
       dash). E.g.

	       ffmpeg -i INPUT -/filter:v filter.script OUTPUT

       will load a filtergraph description from the file named filter.script.

   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. If stream_index is
	   used as an additional stream specifier (see below), then it selects
	   stream number stream_index from the matching streams. Stream
	   numbering is based on the order of the streams as detected by
	   libavformat except when a stream group specifier or program ID is
	   also specified. In this case it is based on the ordering of the
	   streams in the group or program.

       stream_type[:additional_stream_specifier]
	   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
	   additional_stream_specifier is used, then it matches streams which
	   both have this type and match the additional_stream_specifier.
	   Otherwise, it matches all streams of the specified type.

       g:group_specifier[:additional_stream_specifier]
	   Matches streams which are in the group with the specifier
	   group_specifier.  if additional_stream_specifier is used, then it
	   matches streams which both are part of the group and match the
	   additional_stream_specifier.	 group_specifier may be one of the
	   following:

	   group_index
	       Match the stream with this group index.

	   #group_id or i:group_id
	       Match the stream with this group id.

       p:program_id[:additional_stream_specifier]
	   Matches streams which are in the program with the id program_id. If
	   additional_stream_specifier is used, then it matches streams which
	   both are part of the program and match the
	   additional_stream_specifier.

       #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. The colon character ':' in key or value
	   needs to be backslash-escaped.

       disp:dispositions[:additional_stream_specifier]
	   Matches streams with the given disposition(s). dispositions is a
	   list of one or more dispositions (as printed by the -dispositions
	   option) joined with '+'.

       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 named filter_name.
	       Use the -filters option to get a list of all filters.

	   bsf=bitstream_filter_name
	       Print detailed information about the bitstream filter named
	       bitstream_filter_name.  Use the -bsfs option to get a list of
	       all bitstream filters.

	   protocol=protocol_name
	       Print detailed information about the protocol named
	       protocol_name.  Use the -protocols option to get a list of all
	       protocols.

       -version
	   Show version.

       -buildconf
	   Show the build configuration, one option per line.

       -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.

       -dispositions
	   Show stream dispositions.

       -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 can be forced setting the environment
	   variable AV_LOG_FORCE_COLOR.

       -report
	   Dump full command line and log 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 debug".

	   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

       -cpucount count (global)
	   Override detection of CPU count. This option is intended for
	   testing. Do not use it unless you know what you're doing.

		   ffmpeg -cpucount 2

       -max_alloc bytes
	   Set the maximum size limit for allocating a block on the heap by
	   ffmpeg's family of malloc functions. Exercise extreme caution when
	   using this option. Don't use if you do not understand the full
	   consequence of doing so.  Default is INT_MAX.

   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:

	       ffmpeg -i multichannel.mxf -map 0:v:0 -map 0:a:0 -map 0:a:0 -c:a:0 ac3 -b:a:0 640k -ac:a:1 2 -c:a:1 aac -b:2 128k out.mp4

       In the above example, a multichannel audio stream is mapped twice for
       output.	The first instance is encoded with codec ac3 and bitrate 640k.
       The second instance is downmixed to 2 channels and encoded with codec
       aac. A bitrate of 128k is specified for it using absolute index of the
       output stream.

       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.

       -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.

       -alwaysontop
	   Window always on top. Available on: X11 with SDL >= 2.0.5, Windows
	   SDL >= 2.0.6.

       -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
       -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 shown by default,
	   unless the log level is lower than "info". Its display can be
	   forced by manually specifying this option. To 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.

       -filter_threads nb_threads
	   Defines how many threads are used to process a filter pipeline.
	   Each pipeline will produce a thread pool with this many threads
	   available for parallel processing. The default is 0 which means
	   that the thread count will be determined by the number of available
	   CPUs.

       -enable_vulkan
	   Use vulkan renderer rather than SDL builtin renderer. Depends on
	   libplacebo.

       -vulkan_params
	   Vulkan configuration using a list of key=value pairs separated by
	   ":".

       -hwaccel
	   Use HW accelerated decoding. Enable this option will enable vulkan
	   renderer automatically.

   While playing
       q, ESC
	   Quit.

       f   Toggle full screen.

       p, SPC
	   Pause.

       m   Toggle mute.

       9, 0
       /, *
	   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.

SEE ALSO
       ffplay-all(1), ffmpeg(1), ffprobe(1), ffmpeg-utils(1),
       ffmpeg-scaler(1), ffmpeg-resampler(1), ffmpeg-codecs(1),
       ffmpeg-bitstream-filters(1), ffmpeg-formats(1), ffmpeg-devices(1),
       ffmpeg-protocols(1), ffmpeg-filters(1)

AUTHORS
       The FFmpeg developers.

       For details about the authorship, see the Git history of the project
       (https://git.ffmpeg.org/ffmpeg), e.g. by typing the command git log in
       the FFmpeg source directory, or browsing the online repository at
       <https://git.ffmpeg.org/ffmpeg>.

       Maintainers for the specific components are listed in the file
       MAINTAINERS in the source code tree.

								     FFPLAY(1)