1 \input texinfo @c -*- texinfo -*-
3 @settitle FFmpeg Documentation
6 @center @titlefont{FFmpeg Documentation}
12 The generic syntax is:
16 ffmpeg [[infile options][@option{-i} @var{infile}]]... @{[outfile options] @var{outfile}@}...
21 @c man begin DESCRIPTION
23 FFmpeg is a very fast video and audio converter. It can also grab from
24 a live audio/video source.
26 The command line interface is designed to be intuitive, in the sense
27 that FFmpeg tries to figure out all parameters that can possibly be
28 derived automatically. You usually only have to specify the target
31 FFmpeg can also convert from any sample rate to any other, and resize
32 video on the fly with a high quality polyphase filter.
34 As a general rule, options are applied to the next specified
35 file. Therefore, order is important, and you can have the same
36 option on the command line multiple times. Each occurrence is
37 then applied to the next input or output file.
39 * To set the video bitrate of the output file to 64kbit/s:
41 ffmpeg -i input.avi -b 64k output.avi
44 * To force the frame rate of the output file to 24 fps:
46 ffmpeg -i input.avi -r 24 output.avi
49 * To force the frame rate of the input file (valid for raw formats only)
50 to 1 fps and the frame rate of the output file to 24 fps:
52 ffmpeg -r 1 -i input.m2v -r 24 output.avi
55 The format option may be needed for raw input files.
57 By default, FFmpeg tries to convert as losslessly as possible: It
58 uses the same audio and video parameters for the outputs as the one
59 specified for the inputs.
61 @c man end DESCRIPTION
66 @include fftools-common-opts.texi
75 @item -i @var{filename}
79 Overwrite output files.
81 @item -t @var{duration}
82 Restrict the transcoded/captured video sequence
83 to the duration specified in seconds.
84 @code{hh:mm:ss[.xxx]} syntax is also supported.
86 @item -fs @var{limit_size}
87 Set the file size limit.
89 @item -ss @var{position}
90 Seek to given time position in seconds.
91 @code{hh:mm:ss[.xxx]} syntax is also supported.
93 @item -itsoffset @var{offset}
94 Set the input time offset in seconds.
95 @code{[-]hh:mm:ss[.xxx]} syntax is also supported.
96 This option affects all the input files that follow it.
97 The offset is added to the timestamps of the input files.
98 Specifying a positive offset means that the corresponding
99 streams are delayed by 'offset' seconds.
101 @item -timestamp @var{time}
104 @item -metadata @var{key}=@var{value}
105 Set a metadata key/value pair.
107 For example, for setting the title in the output file:
109 ffmpeg -i in.avi -metadata title="my title" out.flv
112 @item -v @var{number}
113 Set the logging verbosity level.
115 @item -target @var{type}
116 Specify target file type ("vcd", "svcd", "dvd", "dv", "dv50", "pal-vcd",
117 "ntsc-svcd", ... ). All the format options (bitrate, codecs,
118 buffer sizes) are then set automatically. You can just type:
121 ffmpeg -i myfile.avi -target vcd /tmp/vcd.mpg
124 Nevertheless you can specify additional options as long as you know
125 they do not conflict with the standard, as in:
128 ffmpeg -i myfile.avi -target vcd -bf 2 /tmp/vcd.mpg
131 @item -dframes @var{number}
132 Set the number of data frames to record.
134 @item -scodec @var{codec}
135 Force subtitle codec ('copy' to copy stream).
138 Add a new subtitle stream to the current output stream.
140 @item -slang @var{code}
141 Set the ISO 639 language code (3 letters) of the current subtitle stream.
145 @section Video Options
148 @item -b @var{bitrate}
149 Set the video bitrate in bit/s (default = 200 kb/s).
150 @item -vframes @var{number}
151 Set the number of video frames to record.
153 Set frame rate (Hz value, fraction or abbreviation), (default = 25).
155 Set frame size. The format is @samp{wxh} (ffserver default = 160x128, ffmpeg default = same as source).
156 The following abbreviations are recognized:
218 @item -aspect @var{aspect}
219 Set aspect ratio (4:3, 16:9 or 1.3333, 1.7777).
220 @item -croptop @var{size}
221 Set top crop band size (in pixels).
222 @item -cropbottom @var{size}
223 Set bottom crop band size (in pixels).
224 @item -cropleft @var{size}
225 Set left crop band size (in pixels).
226 @item -cropright @var{size}
227 Set right crop band size (in pixels).
228 @item -padtop @var{size}
229 Set top pad band size (in pixels).
230 @item -padbottom @var{size}
231 Set bottom pad band size (in pixels).
232 @item -padleft @var{size}
233 Set left pad band size (in pixels).
234 @item -padright @var{size}
235 Set right pad band size (in pixels).
236 @item -padcolor @var{hex_color}
237 Set color of padded bands. The value for padcolor is expressed
238 as a six digit hexadecimal number where the first two digits
239 represent red, the middle two digits green and last two digits
240 blue (default = 000000 (black)).
242 Disable video recording.
243 @item -bt @var{tolerance}
244 Set video bitrate tolerance (in bits, default 4000k).
245 Has a minimum value of: (target_bitrate/target_framerate).
246 In 1-pass mode, bitrate tolerance specifies how far ratecontrol is
247 willing to deviate from the target average bitrate value. This is
248 not related to min/max bitrate. Lowering tolerance too much has
249 an adverse effect on quality.
250 @item -maxrate @var{bitrate}
251 Set max video bitrate (in bit/s).
252 Requires -bufsize to be set.
253 @item -minrate @var{bitrate}
254 Set min video bitrate (in bit/s).
255 Most useful in setting up a CBR encode:
257 ffmpeg -i myfile.avi -b 4000k -minrate 4000k -maxrate 4000k -bufsize 1835k out.m2v
259 It is of little use elsewise.
260 @item -bufsize @var{size}
261 Set video buffer verifier buffer size (in bits).
262 @item -vcodec @var{codec}
263 Force video codec to @var{codec}. Use the @code{copy} special value to
264 tell that the raw codec data must be copied as is.
266 Use same video quality as source (implies VBR).
269 Select the pass number (1 or 2). It is used to do two-pass
270 video encoding. The statistics of the video are recorded in the first
271 pass into a log file (see also the option -passlogfile),
272 and in the second pass that log file is used to generate the video
273 at the exact requested bitrate.
274 On pass 1, you may just deactivate audio and set output to null,
275 examples for Windows and Unix:
277 ffmpeg -i foo.mov -vcodec libxvid -pass 1 -an -f rawvideo -y NUL
278 ffmpeg -i foo.mov -vcodec libxvid -pass 1 -an -f rawvideo -y /dev/null
281 @item -passlogfile @var{prefix}
282 Set two-pass log file name prefix to @var{prefix}, the default file name
283 prefix is ``ffmpeg2pass''. The complete file name will be
284 @file{PREFIX-N.log}, where N is a number specific to the output
288 Add a new video stream to the current output stream.
290 @item -vlang @var{code}
291 Set the ISO 639 language code (3 letters) of the current video stream.
293 @item -vf @var{filter_graph}
294 @var{filter_graph} is a description of the filter graph to apply to
296 Use the option "-filters" to show all the available filters (including
297 also sources and sinks).
301 @section Advanced Video Options
304 @item -pix_fmt @var{format}
305 Set pixel format. Use 'list' as parameter to show all the supported
307 @item -sws_flags @var{flags}
309 @item -g @var{gop_size}
310 Set the group of pictures size.
312 Use only intra frames.
315 @item -qscale @var{q}
316 Use fixed video quantizer scale (VBR).
318 minimum video quantizer scale (VBR)
320 maximum video quantizer scale (VBR)
322 maximum difference between the quantizer scales (VBR)
323 @item -qblur @var{blur}
324 video quantizer scale blur (VBR) (range 0.0 - 1.0)
325 @item -qcomp @var{compression}
326 video quantizer scale compression (VBR) (default 0.5).
327 Constant of ratecontrol equation. Recommended range for default rc_eq: 0.0-1.0
329 @item -lmin @var{lambda}
330 minimum video lagrange factor (VBR)
331 @item -lmax @var{lambda}
332 max video lagrange factor (VBR)
333 @item -mblmin @var{lambda}
334 minimum macroblock quantizer scale (VBR)
335 @item -mblmax @var{lambda}
336 maximum macroblock quantizer scale (VBR)
338 These four options (lmin, lmax, mblmin, mblmax) use 'lambda' units,
339 but you may use the QP2LAMBDA constant to easily convert from 'q' units:
341 ffmpeg -i src.ext -lmax 21*QP2LAMBDA dst.ext
344 @item -rc_init_cplx @var{complexity}
345 initial complexity for single pass encoding
346 @item -b_qfactor @var{factor}
347 qp factor between P- and B-frames
348 @item -i_qfactor @var{factor}
349 qp factor between P- and I-frames
350 @item -b_qoffset @var{offset}
351 qp offset between P- and B-frames
352 @item -i_qoffset @var{offset}
353 qp offset between P- and I-frames
354 @item -rc_eq @var{equation}
355 Set rate control equation (@pxref{FFmpeg formula
356 evaluator}) (default = @code{tex^qComp}).
357 @item -rc_override @var{override}
358 rate control override for specific intervals
359 @item -me_method @var{method}
360 Set motion estimation method to @var{method}.
361 Available methods are (from lowest to best quality):
364 Try just the (0, 0) vector.
373 exhaustive search (slow and marginally better than epzs)
376 @item -dct_algo @var{algo}
377 Set DCT algorithm to @var{algo}. Available values are:
380 FF_DCT_AUTO (default)
393 @item -idct_algo @var{algo}
394 Set IDCT algorithm to @var{algo}. Available values are:
397 FF_IDCT_AUTO (default)
421 Set error resilience to @var{n}.
424 FF_ER_CAREFUL (default)
430 FF_ER_VERY_AGGRESSIVE
433 @item -ec @var{bit_mask}
434 Set error concealment to @var{bit_mask}. @var{bit_mask} is a bit mask of
435 the following values:
438 FF_EC_GUESS_MVS (default = enabled)
440 FF_EC_DEBLOCK (default = enabled)
443 @item -bf @var{frames}
444 Use 'frames' B-frames (supported for MPEG-1, MPEG-2 and MPEG-4).
445 @item -mbd @var{mode}
449 FF_MB_DECISION_SIMPLE: Use mb_cmp (cannot change it yet in FFmpeg).
451 FF_MB_DECISION_BITS: Choose the one which needs the fewest bits.
453 FF_MB_DECISION_RD: rate distortion
457 Use four motion vector by macroblock (MPEG-4 only).
459 Use data partitioning (MPEG-4 only).
460 @item -bug @var{param}
461 Work around encoder bugs that are not auto-detected.
462 @item -strict @var{strictness}
463 How strictly to follow the standards.
465 Enable Advanced intra coding (h263+).
467 Enable Unlimited Motion Vector (h263+)
470 Deinterlace pictures.
472 Force interlacing support in encoder (MPEG-2 and MPEG-4 only).
473 Use this option if your input file is interlaced and you want
474 to keep the interlaced format for minimum losses.
475 The alternative is to deinterlace the input stream with
476 @option{-deinterlace}, but deinterlacing introduces losses.
478 Calculate PSNR of compressed frames.
480 Dump video coding statistics to @file{vstats_HHMMSS.log}.
481 @item -vstats_file @var{file}
482 Dump video coding statistics to @var{file}.
484 top=1/bottom=0/auto=-1 field first
485 @item -dc @var{precision}
487 @item -vtag @var{fourcc/tag}
488 Force video tag/fourcc.
491 @item -vbsf @var{bitstream_filter}
492 Bitstream filters available are "dump_extra", "remove_extra", "noise", "h264_mp4toannexb", "imxdump", "mjpegadump".
494 ffmpeg -i h264.mp4 -vcodec copy -vbsf h264_mp4toannexb -an out.h264
498 @section Audio Options
501 @item -aframes @var{number}
502 Set the number of audio frames to record.
504 Set the audio sampling frequency (default = 44100 Hz).
505 @item -ab @var{bitrate}
506 Set the audio bitrate in bit/s (default = 64k).
508 Set the audio quality (codec-specific, VBR).
509 @item -ac @var{channels}
510 Set the number of audio channels (default = 1).
512 Disable audio recording.
513 @item -acodec @var{codec}
514 Force audio codec to @var{codec}. Use the @code{copy} special value to
515 specify that the raw codec data must be copied as is.
517 Add a new audio track to the output file. If you want to specify parameters,
518 do so before @code{-newaudio} (@code{-acodec}, @code{-ab}, etc..).
520 Mapping will be done automatically, if the number of output streams is equal to
521 the number of input streams, else it will pick the first one that matches. You
522 can override the mapping using @code{-map} as usual.
526 ffmpeg -i file.mpg -vcodec copy -acodec ac3 -ab 384k test.mpg -acodec mp2 -ab 192k -newaudio
528 @item -alang @var{code}
529 Set the ISO 639 language code (3 letters) of the current audio stream.
532 @section Advanced Audio options:
535 @item -atag @var{fourcc/tag}
536 Force audio tag/fourcc.
537 @item -absf @var{bitstream_filter}
538 Bitstream filters available are "dump_extra", "remove_extra", "noise", "mp3comp", "mp3decomp".
541 @section Subtitle options:
544 @item -scodec @var{codec}
545 Force subtitle codec ('copy' to copy stream).
547 Add a new subtitle stream to the current output stream.
548 @item -slang @var{code}
549 Set the ISO 639 language code (3 letters) of the current subtitle stream.
551 Disable subtitle recording.
552 @item -sbsf @var{bitstream_filter}
553 Bitstream filters available are "mov2textsub", "text2movsub".
555 ffmpeg -i file.mov -an -vn -sbsf mov2textsub -scodec copy -f rawvideo sub.txt
559 @section Audio/Video grab options
562 @item -vc @var{channel}
563 Set video grab channel (DV1394 only).
564 @item -tvstd @var{standard}
565 Set television standard (NTSC, PAL (SECAM)).
567 Synchronize read on input.
570 @section Advanced options
573 @item -map @var{input_stream_id}[:@var{sync_stream_id}]
574 Set stream mapping from input streams to output streams.
575 Just enumerate the input streams in the order you want them in the output.
576 @var{sync_stream_id} if specified sets the input stream to sync
578 @item -map_meta_data @var{outfile}:@var{infile}
579 Set meta data information of @var{outfile} from @var{infile}.
581 Print specific debug info.
583 Show benchmarking information at the end of an encode.
584 Shows CPU time used and maximum memory consumption.
585 Maximum memory consumption is not supported on all systems,
586 it will usually display as 0 if not supported.
588 Dump each input packet.
590 When dumping packets, also dump the payload.
592 Only use bit exact algorithms (for codec testing).
594 Set RTP payload size in bytes.
596 Read input at native frame rate. Mainly used to simulate a grab device.
598 Loop over the input stream. Currently it works only for image
599 streams. This option is used for automatic FFserver testing.
600 @item -loop_output @var{number_of_times}
601 Repeatedly loop output for formats that support looping such as animated GIF
602 (0 will loop the output infinitely).
603 @item -threads @var{count}
605 @item -vsync @var{parameter}
607 0 Each frame is passed with its timestamp from the demuxer to the muxer
608 1 Frames will be duplicated and dropped to achieve exactly the requested
610 2 Frames are passed through with their timestamp or dropped so as to prevent
611 2 frames from having the same timestamp
612 -1 Chooses between 1 and 2 depending on muxer capabilities. This is the default method.
614 With -map you can select from
615 which stream the timestamps should be taken. You can leave either video or
616 audio unchanged and sync the remaining stream(s) to the unchanged one.
617 @item -async @var{samples_per_second}
618 Audio sync method. "Stretches/squeezes" the audio stream to match the timestamps,
619 the parameter is the maximum samples per second by which the audio is changed.
620 -async 1 is a special case where only the start of the audio stream is corrected
621 without any later correction.
623 Copy timestamps from input to output.
625 Finish encoding when the shortest input stream ends.
626 @item -dts_delta_threshold
627 Timestamp discontinuity delta threshold.
628 @item -muxdelay @var{seconds}
629 Set the maximum demux-decode delay.
630 @item -muxpreload @var{seconds}
631 Set the initial demux-decode delay.
634 @section Preset files
636 A preset file contains a sequence of @var{option}=@var{value} pairs,
637 one for each line, specifying a sequence of options which would be
638 awkward to specify on the command line. Lines starting with the hash
639 ('#') character are ignored and are used to provide comments. Check
640 the @file{ffpresets} directory in the FFmpeg source tree for examples.
642 Preset files are specified with the @code{vpre}, @code{apre},
643 @code{spre}, and @code{fpre} options. The @code{fpre} option takes the
644 filename of the preset instead of a preset name as input and can be
645 used for any kind of codec. For the @code{vpre}, @code{apre}, and
646 @code{spre} options, the options specified in a preset file are
647 applied to the currently selected codec of the same type as the preset
650 The argument passed to the @code{vpre}, @code{apre}, and @code{spre}
651 preset options identifies the preset file to use according to the
654 First ffmpeg searches for a file named @var{arg}.ffpreset in the
655 directories @file{$FFMPEG_DATADIR} (if set), and @file{$HOME/.ffmpeg}, and in
656 the datadir defined at configuration time (usually @file{PREFIX/share/ffmpeg})
657 in that order. For example, if the argument is @code{libx264-max}, it will
658 search for the file @file{libx264-max.ffpreset}.
660 If no such file is found, then ffmpeg will search for a file named
661 @var{codec_name}-@var{arg}.ffpreset in the above-mentioned
662 directories, where @var{codec_name} is the name of the codec to which
663 the preset file options will be applied. For example, if you select
664 the video codec with @code{-vcodec libx264} and use @code{-vpre max},
665 then it will search for the file @file{libx264-max.ffpreset}.
667 @anchor{FFmpeg formula evaluator}
668 @section FFmpeg formula evaluator
670 When evaluating a rate control string, FFmpeg uses an internal formula
673 The following binary operators are available: @code{+}, @code{-},
674 @code{*}, @code{/}, @code{^}.
676 The following unary operators are available: @code{+}, @code{-},
679 The following statements are available: @code{ld}, @code{st},
682 The following functions are available:
710 The following constants are available:
738 The file name can be @file{-} to read from standard input or to write
741 FFmpeg also handles many protocols specified with an URL syntax.
743 Use 'ffmpeg -protocols' to see a list of the supported protocols.
745 The protocol @code{http:} is currently used only to communicate with
746 FFserver (see the FFserver documentation). When FFmpeg will be a
747 video player it will also be used for streaming :-)
754 For streaming at very low bitrate application, use a low frame rate
755 and a small GOP size. This is especially true for RealVideo where
756 the Linux player does not seem to be very fast, so it can miss
757 frames. An example is:
760 ffmpeg -g 3 -r 3 -t 10 -b 50k -s qcif -f rv10 /tmp/b.rm
764 The parameter 'q' which is displayed while encoding is the current
765 quantizer. The value 1 indicates that a very good quality could
766 be achieved. The value 31 indicates the worst quality. If q=31 appears
767 too often, it means that the encoder cannot compress enough to meet
768 your bitrate. You must either increase the bitrate, decrease the
769 frame rate or decrease the frame size.
772 If your computer is not fast enough, you can speed up the
773 compression at the expense of the compression ratio. You can use
774 '-me zero' to speed up motion estimation, and '-intra' to disable
775 motion estimation completely (you have only I-frames, which means it
776 is about as good as JPEG compression).
779 To have very low audio bitrates, reduce the sampling frequency
780 (down to 22050 Hz for MPEG audio, 22050 or 11025 for AC-3).
783 To have a constant quality (but a variable bitrate), use the option
784 '-qscale n' when 'n' is between 1 (excellent quality) and 31 (worst
788 When converting video files, you can use the '-sameq' option which
789 uses the same quality factor in the encoder as in the decoder.
790 It allows almost lossless encoding.
796 @c man begin EXAMPLES
798 @section Video and Audio grabbing
800 FFmpeg can grab video and audio from devices given that you specify the input
804 ffmpeg -f oss -i /dev/dsp -f video4linux2 -i /dev/video0 /tmp/out.mpg
807 Note that you must activate the right video source and channel before
808 launching FFmpeg with any TV viewer such as xawtv
809 (@url{http://linux.bytesex.org/xawtv/}) by Gerd Knorr. You also
810 have to set the audio recording levels correctly with a
813 @section X11 grabbing
815 FFmpeg can grab the X11 display.
818 ffmpeg -f x11grab -s cif -i :0.0 /tmp/out.mpg
821 0.0 is display.screen number of your X11 server, same as
822 the DISPLAY environment variable.
825 ffmpeg -f x11grab -s cif -i :0.0+10,20 /tmp/out.mpg
828 0.0 is display.screen number of your X11 server, same as the DISPLAY environment
829 variable. 10 is the x-offset and 20 the y-offset for the grabbing.
831 @section Video and Audio file format conversion
833 * FFmpeg can use any supported file format and protocol as input:
837 * You can use YUV files as input:
840 ffmpeg -i /tmp/test%d.Y /tmp/out.mpg
843 It will use the files:
845 /tmp/test0.Y, /tmp/test0.U, /tmp/test0.V,
846 /tmp/test1.Y, /tmp/test1.U, /tmp/test1.V, etc...
849 The Y files use twice the resolution of the U and V files. They are
850 raw files, without header. They can be generated by all decent video
851 decoders. You must specify the size of the image with the @option{-s} option
852 if FFmpeg cannot guess it.
854 * You can input from a raw YUV420P file:
857 ffmpeg -i /tmp/test.yuv /tmp/out.avi
860 test.yuv is a file containing raw YUV planar data. Each frame is composed
861 of the Y plane followed by the U and V planes at half vertical and
862 horizontal resolution.
864 * You can output to a raw YUV420P file:
867 ffmpeg -i mydivx.avi hugefile.yuv
870 * You can set several input files and output files:
873 ffmpeg -i /tmp/a.wav -s 640x480 -i /tmp/a.yuv /tmp/a.mpg
876 Converts the audio file a.wav and the raw YUV video file a.yuv
879 * You can also do audio and video conversions at the same time:
882 ffmpeg -i /tmp/a.wav -ar 22050 /tmp/a.mp2
885 Converts a.wav to MPEG audio at 22050 Hz sample rate.
887 * You can encode to several formats at the same time and define a
888 mapping from input stream to output streams:
891 ffmpeg -i /tmp/a.wav -ab 64k /tmp/a.mp2 -ab 128k /tmp/b.mp2 -map 0:0 -map 0:0
894 Converts a.wav to a.mp2 at 64 kbits and to b.mp2 at 128 kbits. '-map
895 file:index' specifies which input stream is used for each output
896 stream, in the order of the definition of output streams.
898 * You can transcode decrypted VOBs:
901 ffmpeg -i snatch_1.vob -f avi -vcodec mpeg4 -b 800k -g 300 -bf 2 -acodec libmp3lame -ab 128k snatch.avi
904 This is a typical DVD ripping example; the input is a VOB file, the
905 output an AVI file with MPEG-4 video and MP3 audio. Note that in this
906 command we use B-frames so the MPEG-4 stream is DivX5 compatible, and
907 GOP size is 300 which means one intra frame every 10 seconds for 29.97fps
908 input video. Furthermore, the audio stream is MP3-encoded so you need
909 to enable LAME support by passing @code{--enable-libmp3lame} to configure.
910 The mapping is particularly useful for DVD transcoding
911 to get the desired audio language.
913 NOTE: To see the supported input formats, use @code{ffmpeg -formats}.
915 * You can extract images from a video, or create a video from many images:
917 For extracting images from a video:
919 ffmpeg -i foo.avi -r 1 -s WxH -f image2 foo-%03d.jpeg
922 This will extract one video frame per second from the video and will
923 output them in files named @file{foo-001.jpeg}, @file{foo-002.jpeg},
924 etc. Images will be rescaled to fit the new WxH values.
926 If you want to extract just a limited number of frames, you can use the
927 above command in combination with the -vframes or -t option, or in
928 combination with -ss to start extracting from a certain point in time.
930 For creating a video from many images:
932 ffmpeg -f image2 -i foo-%03d.jpeg -r 12 -s WxH foo.avi
935 The syntax @code{foo-%03d.jpeg} specifies to use a decimal number
936 composed of three digits padded with zeroes to express the sequence
937 number. It is the same syntax supported by the C printf function, but
938 only formats accepting a normal integer are suitable.
940 * You can put many streams of the same type in the output:
943 ffmpeg -i test1.avi -i test2.avi -vcodec copy -acodec copy -vcodec copy -acodec copy test12.avi -newvideo -newaudio
946 In addition to the first video and audio streams, the resulting
947 output file @file{test12.avi} will contain the second video
948 and the second audio stream found in the input streams list.
950 The @code{-newvideo}, @code{-newaudio} and @code{-newsubtitle}
951 options have to be specified immediately after the name of the output
952 file to which you want to add them.
955 @include filters.texi
960 @settitle FFmpeg video converter
963 ffplay(1), ffprobe(1), ffserver(1) and the FFmpeg HTML documentation
967 The FFmpeg developers