diff options
| author | Víctor Paesa <[email protected]> | 2006-11-20 18:44:33 +0000 |
|---|---|---|
| committer | Diego Biurrun <[email protected]> | 2006-11-20 18:44:33 +0000 |
| commit | 699e77b198c924a0a32c6f83f5d51ca574e3757c (patch) | |
| tree | 5f6f9eaea5704e35532a1c0e628cfd72f5189d91 | |
| parent | 9f83e1427ac17b9c96c3ce3c975929c900c05fee (diff) | |
Some notes about the order of options on the command line.
patch by Víctor Paesa, wzrlpy arsystel com
Originally committed as revision 7135 to svn://svn.ffmpeg.org/ffmpeg/trunk
| -rw-r--r-- | doc/ffmpeg-doc.texi | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/doc/ffmpeg-doc.texi b/doc/ffmpeg-doc.texi index 33ccc66be4..8997ff3335 100644 --- a/doc/ffmpeg-doc.texi +++ b/doc/ffmpeg-doc.texi @@ -139,9 +139,31 @@ ffmpeg [[infile options][@option{-i} @var{infile}]]... @{[outfile options] @var{ If no input file is given, audio/video grabbing is done. As a general rule, options are applied to the next specified -file. For example, if you give the @option{-b 64k} option, it sets the video -bitrate of the next file. The format option may be needed for raw input -files. +file. Therefore, order is important, and you can have the same +option on the comman line multiple times. Each occurence is +then applied to the next input or output file. + +* To set the video bitrate of the output file to 64Kbit/s: +@example +ffmpeg -i input.avi -b 64k output.avi +@end example + +* To force the frame rate of the input and output file to 24 fps: +@example +ffmpeg -r 24 -i input.avi output.avi +@end example + +* To force the frame rate of the output file to 24 fps: +@example +ffmpeg -i input.avi -r 24 output.avi +@end example + +* To force the frame rate of input file to 1 fps and the output file to 24 fps: +@example +ffmpeg -r 1 -i input.avi -r 24 output.avi +@end example + +The format option may be needed for raw input files. By default, FFmpeg tries to convert as losslessly as possible: It uses the same audio and video parameters for the outputs as the one |