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1. Introduction

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.


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2. Invocation


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2.1 Syntax

 
ffplay [options] ‘input_file

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2.2 Main options

-L

Show license.

-h, -?, -help, --help

Show help.

-version

Show version.

-formats

Show available formats.

The fields preceding the format names have the following meanings:

D

Decoding available

E

Encoding available

-codecs

Show available codecs.

The fields preceding the codec names have the following meanings:

D

Decoding available

E

Encoding available

V/A/S

Video/audio/subtitle codec

S

Codec supports slices

D

Codec supports direct rendering

T

Codec can handle input truncated at random locations instead of only at frame boundaries

-bsfs

Show available bitstream filters.

-protocols

Show available protocols.

-filters

Show available libavfilter filters.

-pix_fmts

Show available pixel formats.

-loglevel loglevel

Set the logging level used by the library. loglevel is a number or a string containing one of the following values:

quiet
panic
fatal
error
warning
info
verbose
debug
-x width

Force displayed width.

-y height

Force displayed height.

-s size

Set frame size (WxH or abbreviation), needed for videos which don't contain a header with the frame size like raw YUV.

-an

Disable audio.

-vn

Disable video.

-ss pos

Seek to a given position in seconds.

-bytes

Seek by bytes.

-nodisp

Disable graphical display.

-f fmt

Force format.


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2.3 Advanced options

-pix_fmt format

Set pixel format.

-stats

Show the stream duration, the codec parameters, the current position in the stream and the audio/video synchronisation drift.

-debug

Print specific debug info.

-bug

Work around bugs.

-vismv

Visualize motion vectors.

-fast

Non-spec-compliant optimizations.

-genpts

Generate pts.

-rtp_tcp

Force RTP/TCP protocol usage instead of RTP/UDP. It is only meaningful if you are streaming with the RTSP protocol.

-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.

-threads count

Set the thread count.

-ast audio_stream_number

Select the desired audio stream number, counting from 0. The number refers to the list of all the input audio streams. If it is greater than the number of audio streams minus one, then the last one is selected, if it is negative the audio playback is disabled.

-vst video_stream_number

Select the desired video stream number, counting from 0. The number refers to the list of all the input video streams. If it is greater than the number of video streams minus one, then the last one is selected, if it is negative the video playback is disabled.

-sst subtitle_stream_number

Select the desired subtitle stream number, counting from 0. The number refers to the list of all the input subtitle streams. If it is greater than the number of subtitle streams minus one, then the last one is selected, if it is negative the subtitle rendering is disabled.


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2.4 While playing

<q, ESC>

Quit.

<f>

Toggle full screen.

<p, SPC>

Pause.

<a>

Cycle audio channel.

<v>

Cycle video channel.

<t>

Cycle subtitle channel.

<w>

Show audio waves.

<left/right>

Seek backward/forward 10 seconds.

<down/up>

Seek backward/forward 1 minute.

<mouse click>

Seek to percentage in file corresponding to fraction of width.


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About This Document

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