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}
102 Set the recording timestamp in the container.
103 The syntax for @var{time} is:
105 now|([(YYYY-MM-DD|YYYYMMDD)[T|t| ]]((HH[:MM[:SS[.m...]]])|(HH[MM[SS[.m...]]]))[Z|z])
107 If the value is "now" it takes the current time.
108 Time is local time unless 'Z' or 'z' is appended, in which case it is
110 If the year-month-day part is not specified it takes the current
113 @item -metadata @var{key}=@var{value}
114 Set a metadata key/value pair.
116 For example, for setting the title in the output file:
118 ffmpeg -i in.avi -metadata title="my title" out.flv
121 @item -v @var{number}
122 Set the logging verbosity level.
124 @item -target @var{type}
125 Specify target file type ("vcd", "svcd", "dvd", "dv", "dv50", "pal-vcd",
126 "ntsc-svcd", ... ). All the format options (bitrate, codecs,
127 buffer sizes) are then set automatically. You can just type:
130 ffmpeg -i myfile.avi -target vcd /tmp/vcd.mpg
133 Nevertheless you can specify additional options as long as you know
134 they do not conflict with the standard, as in:
137 ffmpeg -i myfile.avi -target vcd -bf 2 /tmp/vcd.mpg
140 @item -dframes @var{number}
141 Set the number of data frames to record.
143 @item -scodec @var{codec}
144 Force subtitle codec ('copy' to copy stream).
147 Add a new subtitle stream to the current output stream.
149 @item -slang @var{code}
150 Set the ISO 639 language code (3 letters) of the current subtitle stream.
154 @section Video Options
157 @item -b @var{bitrate}
158 Set the video bitrate in bit/s (default = 200 kb/s).
159 @item -vframes @var{number}
160 Set the number of video frames to record.
162 Set frame rate (Hz value, fraction or abbreviation), (default = 25).
164 Set frame size. The format is @samp{wxh} (ffserver default = 160x128, ffmpeg default = same as source).
165 The following abbreviations are recognized:
227 @item -aspect @var{aspect}
228 Set aspect ratio (4:3, 16:9 or 1.3333, 1.7777).
229 @item -croptop @var{size}
230 @item -cropbottom @var{size}
231 @item -cropleft @var{size}
232 @item -cropright @var{size}
233 All the crop options have been removed. Use -vf
234 crop=width:height:x:y instead.
236 @item -padtop @var{size}
237 @item -padbottom @var{size}
238 @item -padleft @var{size}
239 @item -padright @var{size}
240 @item -padcolor @var{hex_color}
241 All the pad options have been removed. Use -vf
242 pad=width:height:x:y:color instead.
244 Disable video recording.
245 @item -bt @var{tolerance}
246 Set video bitrate tolerance (in bits, default 4000k).
247 Has a minimum value of: (target_bitrate/target_framerate).
248 In 1-pass mode, bitrate tolerance specifies how far ratecontrol is
249 willing to deviate from the target average bitrate value. This is
250 not related to min/max bitrate. Lowering tolerance too much has
251 an adverse effect on quality.
252 @item -maxrate @var{bitrate}
253 Set max video bitrate (in bit/s).
254 Requires -bufsize to be set.
255 @item -minrate @var{bitrate}
256 Set min video bitrate (in bit/s).
257 Most useful in setting up a CBR encode:
259 ffmpeg -i myfile.avi -b 4000k -minrate 4000k -maxrate 4000k -bufsize 1835k out.m2v
261 It is of little use elsewise.
262 @item -bufsize @var{size}
263 Set video buffer verifier buffer size (in bits).
264 @item -vcodec @var{codec}
265 Force video codec to @var{codec}. Use the @code{copy} special value to
266 tell that the raw codec data must be copied as is.
268 Use same video quality as source (implies VBR).
271 Select the pass number (1 or 2). It is used to do two-pass
272 video encoding. The statistics of the video are recorded in the first
273 pass into a log file (see also the option -passlogfile),
274 and in the second pass that log file is used to generate the video
275 at the exact requested bitrate.
276 On pass 1, you may just deactivate audio and set output to null,
277 examples for Windows and Unix:
279 ffmpeg -i foo.mov -vcodec libxvid -pass 1 -an -f rawvideo -y NUL
280 ffmpeg -i foo.mov -vcodec libxvid -pass 1 -an -f rawvideo -y /dev/null
283 @item -passlogfile @var{prefix}
284 Set two-pass log file name prefix to @var{prefix}, the default file name
285 prefix is ``ffmpeg2pass''. The complete file name will be
286 @file{PREFIX-N.log}, where N is a number specific to the output
290 Add a new video stream to the current output stream.
292 @item -vlang @var{code}
293 Set the ISO 639 language code (3 letters) of the current video stream.
295 @item -vf @var{filter_graph}
296 @var{filter_graph} is a description of the filter graph to apply to
298 Use the option "-filters" to show all the available filters (including
299 also sources and sinks).
303 @section Advanced Video Options
306 @item -pix_fmt @var{format}
307 Set pixel format. Use 'list' as parameter to show all the supported
309 @item -sws_flags @var{flags}
311 @item -g @var{gop_size}
312 Set the group of pictures size.
314 Use only intra frames.
317 @item -qscale @var{q}
318 Use fixed video quantizer scale (VBR).
320 minimum video quantizer scale (VBR)
322 maximum video quantizer scale (VBR)
324 maximum difference between the quantizer scales (VBR)
325 @item -qblur @var{blur}
326 video quantizer scale blur (VBR) (range 0.0 - 1.0)
327 @item -qcomp @var{compression}
328 video quantizer scale compression (VBR) (default 0.5).
329 Constant of ratecontrol equation. Recommended range for default rc_eq: 0.0-1.0
331 @item -lmin @var{lambda}
332 minimum video lagrange factor (VBR)
333 @item -lmax @var{lambda}
334 max video lagrange factor (VBR)
335 @item -mblmin @var{lambda}
336 minimum macroblock quantizer scale (VBR)
337 @item -mblmax @var{lambda}
338 maximum macroblock quantizer scale (VBR)
340 These four options (lmin, lmax, mblmin, mblmax) use 'lambda' units,
341 but you may use the QP2LAMBDA constant to easily convert from 'q' units:
343 ffmpeg -i src.ext -lmax 21*QP2LAMBDA dst.ext
346 @item -rc_init_cplx @var{complexity}
347 initial complexity for single pass encoding
348 @item -b_qfactor @var{factor}
349 qp factor between P- and B-frames
350 @item -i_qfactor @var{factor}
351 qp factor between P- and I-frames
352 @item -b_qoffset @var{offset}
353 qp offset between P- and B-frames
354 @item -i_qoffset @var{offset}
355 qp offset between P- and I-frames
356 @item -rc_eq @var{equation}
357 Set rate control equation (@pxref{FFmpeg formula
358 evaluator}) (default = @code{tex^qComp}).
359 @item -rc_override @var{override}
360 rate control override for specific intervals
361 @item -me_method @var{method}
362 Set motion estimation method to @var{method}.
363 Available methods are (from lowest to best quality):
366 Try just the (0, 0) vector.
375 exhaustive search (slow and marginally better than epzs)
378 @item -dct_algo @var{algo}
379 Set DCT algorithm to @var{algo}. Available values are:
382 FF_DCT_AUTO (default)
395 @item -idct_algo @var{algo}
396 Set IDCT algorithm to @var{algo}. Available values are:
399 FF_IDCT_AUTO (default)
423 Set error resilience to @var{n}.
426 FF_ER_CAREFUL (default)
432 FF_ER_VERY_AGGRESSIVE
435 @item -ec @var{bit_mask}
436 Set error concealment to @var{bit_mask}. @var{bit_mask} is a bit mask of
437 the following values:
440 FF_EC_GUESS_MVS (default = enabled)
442 FF_EC_DEBLOCK (default = enabled)
445 @item -bf @var{frames}
446 Use 'frames' B-frames (supported for MPEG-1, MPEG-2 and MPEG-4).
447 @item -mbd @var{mode}
451 FF_MB_DECISION_SIMPLE: Use mb_cmp (cannot change it yet in FFmpeg).
453 FF_MB_DECISION_BITS: Choose the one which needs the fewest bits.
455 FF_MB_DECISION_RD: rate distortion
459 Use four motion vector by macroblock (MPEG-4 only).
461 Use data partitioning (MPEG-4 only).
462 @item -bug @var{param}
463 Work around encoder bugs that are not auto-detected.
464 @item -strict @var{strictness}
465 How strictly to follow the standards.
467 Enable Advanced intra coding (h263+).
469 Enable Unlimited Motion Vector (h263+)
472 Deinterlace pictures.
474 Force interlacing support in encoder (MPEG-2 and MPEG-4 only).
475 Use this option if your input file is interlaced and you want
476 to keep the interlaced format for minimum losses.
477 The alternative is to deinterlace the input stream with
478 @option{-deinterlace}, but deinterlacing introduces losses.
480 Calculate PSNR of compressed frames.
482 Dump video coding statistics to @file{vstats_HHMMSS.log}.
483 @item -vstats_file @var{file}
484 Dump video coding statistics to @var{file}.
486 top=1/bottom=0/auto=-1 field first
487 @item -dc @var{precision}
489 @item -vtag @var{fourcc/tag}
490 Force video tag/fourcc.
493 @item -vbsf @var{bitstream_filter}
494 Bitstream filters available are "dump_extra", "remove_extra", "noise", "h264_mp4toannexb", "imxdump", "mjpegadump".
496 ffmpeg -i h264.mp4 -vcodec copy -vbsf h264_mp4toannexb -an out.h264
500 @section Audio Options
503 @item -aframes @var{number}
504 Set the number of audio frames to record.
506 Set the audio sampling frequency (default = 44100 Hz).
507 @item -ab @var{bitrate}
508 Set the audio bitrate in bit/s (default = 64k).
510 Set the audio quality (codec-specific, VBR).
511 @item -ac @var{channels}
512 Set the number of audio channels. For input streams it is set by
513 default to 1, for output streams it is set by default to the same
514 number of audio channels in input. If the input file has audio streams
515 with different channel count, the behaviour is undefined.
517 Disable audio recording.
518 @item -acodec @var{codec}
519 Force audio codec to @var{codec}. Use the @code{copy} special value to
520 specify that the raw codec data must be copied as is.
522 Add a new audio track to the output file. If you want to specify parameters,
523 do so before @code{-newaudio} (@code{-acodec}, @code{-ab}, etc..).
525 Mapping will be done automatically, if the number of output streams is equal to
526 the number of input streams, else it will pick the first one that matches. You
527 can override the mapping using @code{-map} as usual.
531 ffmpeg -i file.mpg -vcodec copy -acodec ac3 -ab 384k test.mpg -acodec mp2 -ab 192k -newaudio
533 @item -alang @var{code}
534 Set the ISO 639 language code (3 letters) of the current audio stream.
537 @section Advanced Audio options:
540 @item -atag @var{fourcc/tag}
541 Force audio tag/fourcc.
542 @item -absf @var{bitstream_filter}
543 Bitstream filters available are "dump_extra", "remove_extra", "noise", "mp3comp", "mp3decomp".
546 @section Subtitle options:
549 @item -scodec @var{codec}
550 Force subtitle codec ('copy' to copy stream).
552 Add a new subtitle stream to the current output stream.
553 @item -slang @var{code}
554 Set the ISO 639 language code (3 letters) of the current subtitle stream.
556 Disable subtitle recording.
557 @item -sbsf @var{bitstream_filter}
558 Bitstream filters available are "mov2textsub", "text2movsub".
560 ffmpeg -i file.mov -an -vn -sbsf mov2textsub -scodec copy -f rawvideo sub.txt
564 @section Audio/Video grab options
567 @item -vc @var{channel}
568 Set video grab channel (DV1394 only).
569 @item -tvstd @var{standard}
570 Set television standard (NTSC, PAL (SECAM)).
572 Synchronize read on input.
575 @section Advanced options
578 @item -map @var{input_stream_id}[:@var{sync_stream_id}]
579 Set stream mapping from input streams to output streams.
580 Just enumerate the input streams in the order you want them in the output.
581 @var{sync_stream_id} if specified sets the input stream to sync
583 @item -map_meta_data @var{outfile}:@var{infile}
584 Set meta data information of @var{outfile} from @var{infile}.
586 Print specific debug info.
588 Show benchmarking information at the end of an encode.
589 Shows CPU time used and maximum memory consumption.
590 Maximum memory consumption is not supported on all systems,
591 it will usually display as 0 if not supported.
593 Dump each input packet.
595 When dumping packets, also dump the payload.
597 Only use bit exact algorithms (for codec testing).
599 Set RTP payload size in bytes.
601 Read input at native frame rate. Mainly used to simulate a grab device.
603 Loop over the input stream. Currently it works only for image
604 streams. This option is used for automatic FFserver testing.
605 @item -loop_output @var{number_of_times}
606 Repeatedly loop output for formats that support looping such as animated GIF
607 (0 will loop the output infinitely).
608 @item -threads @var{count}
610 @item -vsync @var{parameter}
612 0 Each frame is passed with its timestamp from the demuxer to the muxer
613 1 Frames will be duplicated and dropped to achieve exactly the requested
615 2 Frames are passed through with their timestamp or dropped so as to prevent
616 2 frames from having the same timestamp
617 -1 Chooses between 1 and 2 depending on muxer capabilities. This is the default method.
619 With -map you can select from
620 which stream the timestamps should be taken. You can leave either video or
621 audio unchanged and sync the remaining stream(s) to the unchanged one.
622 @item -async @var{samples_per_second}
623 Audio sync method. "Stretches/squeezes" the audio stream to match the timestamps,
624 the parameter is the maximum samples per second by which the audio is changed.
625 -async 1 is a special case where only the start of the audio stream is corrected
626 without any later correction.
628 Copy timestamps from input to output.
630 Finish encoding when the shortest input stream ends.
631 @item -dts_delta_threshold
632 Timestamp discontinuity delta threshold.
633 @item -muxdelay @var{seconds}
634 Set the maximum demux-decode delay.
635 @item -muxpreload @var{seconds}
636 Set the initial demux-decode delay.
637 @item -streamid @var{output-stream-index}:@var{new-value}
638 Assign a new value to a stream's stream-id field in the next output file.
639 All stream-id fields are reset to default for each output file.
641 For example, to set the stream 0 PID to 33 and the stream 1 PID to 36 for
642 an output mpegts file:
644 ffmpeg -i infile -streamid 0:33 -streamid 1:36 out.ts
648 @section Preset files
650 A preset file contains a sequence of @var{option}=@var{value} pairs,
651 one for each line, specifying a sequence of options which would be
652 awkward to specify on the command line. Lines starting with the hash
653 ('#') character are ignored and are used to provide comments. Check
654 the @file{ffpresets} directory in the FFmpeg source tree for examples.
656 Preset files are specified with the @code{vpre}, @code{apre},
657 @code{spre}, and @code{fpre} options. The @code{fpre} option takes the
658 filename of the preset instead of a preset name as input and can be
659 used for any kind of codec. For the @code{vpre}, @code{apre}, and
660 @code{spre} options, the options specified in a preset file are
661 applied to the currently selected codec of the same type as the preset
664 The argument passed to the @code{vpre}, @code{apre}, and @code{spre}
665 preset options identifies the preset file to use according to the
668 First ffmpeg searches for a file named @var{arg}.ffpreset in the
669 directories @file{$FFMPEG_DATADIR} (if set), and @file{$HOME/.ffmpeg}, and in
670 the datadir defined at configuration time (usually @file{PREFIX/share/ffmpeg})
671 in that order. For example, if the argument is @code{libx264-max}, it will
672 search for the file @file{libx264-max.ffpreset}.
674 If no such file is found, then ffmpeg will search for a file named
675 @var{codec_name}-@var{arg}.ffpreset in the above-mentioned
676 directories, where @var{codec_name} is the name of the codec to which
677 the preset file options will be applied. For example, if you select
678 the video codec with @code{-vcodec libx264} and use @code{-vpre max},
679 then it will search for the file @file{libx264-max.ffpreset}.
681 @anchor{FFmpeg formula evaluator}
682 @section FFmpeg formula evaluator
684 When evaluating a rate control string, FFmpeg uses an internal formula
687 The following binary operators are available: @code{+}, @code{-},
688 @code{*}, @code{/}, @code{^}.
690 The following unary operators are available: @code{+}, @code{-},
693 The following statements are available: @code{ld}, @code{st},
696 The following functions are available:
724 The following constants are available:
755 For streaming at very low bitrate application, use a low frame rate
756 and a small GOP size. This is especially true for RealVideo where
757 the Linux player does not seem to be very fast, so it can miss
758 frames. An example is:
761 ffmpeg -g 3 -r 3 -t 10 -b 50k -s qcif -f rv10 /tmp/b.rm
765 The parameter 'q' which is displayed while encoding is the current
766 quantizer. The value 1 indicates that a very good quality could
767 be achieved. The value 31 indicates the worst quality. If q=31 appears
768 too often, it means that the encoder cannot compress enough to meet
769 your bitrate. You must either increase the bitrate, decrease the
770 frame rate or decrease the frame size.
773 If your computer is not fast enough, you can speed up the
774 compression at the expense of the compression ratio. You can use
775 '-me zero' to speed up motion estimation, and '-intra' to disable
776 motion estimation completely (you have only I-frames, which means it
777 is about as good as JPEG compression).
780 To have very low audio bitrates, reduce the sampling frequency
781 (down to 22050 Hz for MPEG audio, 22050 or 11025 for AC-3).
784 To have a constant quality (but a variable bitrate), use the option
785 '-qscale n' when 'n' is between 1 (excellent quality) and 31 (worst
789 When converting video files, you can use the '-sameq' option which
790 uses the same quality factor in the encoder as in the decoder.
791 It allows almost lossless encoding.
797 @c man begin EXAMPLES
799 @section Video and Audio grabbing
801 FFmpeg can grab video and audio from devices given that you specify the input
805 ffmpeg -f oss -i /dev/dsp -f video4linux2 -i /dev/video0 /tmp/out.mpg
808 Note that you must activate the right video source and channel before
809 launching FFmpeg with any TV viewer such as xawtv
810 (@url{http://linux.bytesex.org/xawtv/}) by Gerd Knorr. You also
811 have to set the audio recording levels correctly with a
814 @section X11 grabbing
816 FFmpeg can grab the X11 display.
819 ffmpeg -f x11grab -s cif -r 25 -i :0.0 /tmp/out.mpg
822 0.0 is display.screen number of your X11 server, same as
823 the DISPLAY environment variable.
826 ffmpeg -f x11grab -s cif -r 25 -i :0.0+10,20 /tmp/out.mpg
829 0.0 is display.screen number of your X11 server, same as the DISPLAY environment
830 variable. 10 is the x-offset and 20 the y-offset for the grabbing.
832 @section Video and Audio file format conversion
834 * FFmpeg can use any supported file format and protocol as input:
838 * You can use YUV files as input:
841 ffmpeg -i /tmp/test%d.Y /tmp/out.mpg
844 It will use the files:
846 /tmp/test0.Y, /tmp/test0.U, /tmp/test0.V,
847 /tmp/test1.Y, /tmp/test1.U, /tmp/test1.V, etc...
850 The Y files use twice the resolution of the U and V files. They are
851 raw files, without header. They can be generated by all decent video
852 decoders. You must specify the size of the image with the @option{-s} option
853 if FFmpeg cannot guess it.
855 * You can input from a raw YUV420P file:
858 ffmpeg -i /tmp/test.yuv /tmp/out.avi
861 test.yuv is a file containing raw YUV planar data. Each frame is composed
862 of the Y plane followed by the U and V planes at half vertical and
863 horizontal resolution.
865 * You can output to a raw YUV420P file:
868 ffmpeg -i mydivx.avi hugefile.yuv
871 * You can set several input files and output files:
874 ffmpeg -i /tmp/a.wav -s 640x480 -i /tmp/a.yuv /tmp/a.mpg
877 Converts the audio file a.wav and the raw YUV video file a.yuv
880 * You can also do audio and video conversions at the same time:
883 ffmpeg -i /tmp/a.wav -ar 22050 /tmp/a.mp2
886 Converts a.wav to MPEG audio at 22050 Hz sample rate.
888 * You can encode to several formats at the same time and define a
889 mapping from input stream to output streams:
892 ffmpeg -i /tmp/a.wav -ab 64k /tmp/a.mp2 -ab 128k /tmp/b.mp2 -map 0:0 -map 0:0
895 Converts a.wav to a.mp2 at 64 kbits and to b.mp2 at 128 kbits. '-map
896 file:index' specifies which input stream is used for each output
897 stream, in the order of the definition of output streams.
899 * You can transcode decrypted VOBs:
902 ffmpeg -i snatch_1.vob -f avi -vcodec mpeg4 -b 800k -g 300 -bf 2 -acodec libmp3lame -ab 128k snatch.avi
905 This is a typical DVD ripping example; the input is a VOB file, the
906 output an AVI file with MPEG-4 video and MP3 audio. Note that in this
907 command we use B-frames so the MPEG-4 stream is DivX5 compatible, and
908 GOP size is 300 which means one intra frame every 10 seconds for 29.97fps
909 input video. Furthermore, the audio stream is MP3-encoded so you need
910 to enable LAME support by passing @code{--enable-libmp3lame} to configure.
911 The mapping is particularly useful for DVD transcoding
912 to get the desired audio language.
914 NOTE: To see the supported input formats, use @code{ffmpeg -formats}.
916 * You can extract images from a video, or create a video from many images:
918 For extracting images from a video:
920 ffmpeg -i foo.avi -r 1 -s WxH -f image2 foo-%03d.jpeg
923 This will extract one video frame per second from the video and will
924 output them in files named @file{foo-001.jpeg}, @file{foo-002.jpeg},
925 etc. Images will be rescaled to fit the new WxH values.
927 If you want to extract just a limited number of frames, you can use the
928 above command in combination with the -vframes or -t option, or in
929 combination with -ss to start extracting from a certain point in time.
931 For creating a video from many images:
933 ffmpeg -f image2 -i foo-%03d.jpeg -r 12 -s WxH foo.avi
936 The syntax @code{foo-%03d.jpeg} specifies to use a decimal number
937 composed of three digits padded with zeroes to express the sequence
938 number. It is the same syntax supported by the C printf function, but
939 only formats accepting a normal integer are suitable.
941 * You can put many streams of the same type in the output:
944 ffmpeg -i test1.avi -i test2.avi -vcodec copy -acodec copy -vcodec copy -acodec copy test12.avi -newvideo -newaudio
947 In addition to the first video and audio streams, the resulting
948 output file @file{test12.avi} will contain the second video
949 and the second audio stream found in the input streams list.
951 The @code{-newvideo}, @code{-newaudio} and @code{-newsubtitle}
952 options have to be specified immediately after the name of the output
953 file to which you want to add them.
957 @include outdevs.texi
958 @include protocols.texi
959 @include filters.texi
964 @settitle FFmpeg video converter
967 ffplay(1), ffprobe(1), ffserver(1) and the FFmpeg HTML documentation
971 The FFmpeg developers