[FFmpeg-user] CLI User Documentation
jeff_eckermann at yahoo.com
Fri Apr 8 04:27:28 CEST 2011
> I am trying to use FFmpeg and have no prior experience
>processing video files. To that end, I went to the FFMpeg.org site -->
>Documentation tab --> Command Line Interface (CLI) and Related User
>Documentation section --> FFmpeg Documentation link. This document
>apparently presumes a great deal of background knowledge and used many
>terms w/o defining them. I have been Google-ing a lot and not getting
>very far. Can anyone recommend a Glossary or "Video Processing for
>Dummies"-type site explaining the fundamental concepts and terms?
> I appreciate the help.
It would help if you could tell us what you are trying to do.
As a general introduction: best to start small and work up. FFmpeg supports
lots of features that most people will rarely if ever use. A minimal command
ffmpeg -i inputfile outputfile
FFmpeg will usually do a good job of working out what "inputfile" actually is,
and what "outputfile" is intended to be. If transcoding is required, default
values will be used for the optional parameters. These defaults may be fine for
you, or they might not e.g. the default video bitrate is 200kbs, which will give
poor quality and is really only suitable for internet streaming. You can use
the "-b" flag to specify the video bitrate, and "-ab" to specify the audio
You can specify the audio and video format by using "-acodec" and "-vcodec"
options, for example:
ffmpeg -i dvd_rip.mpg -vcodec mpeg4 -acodec libmp3lame -b 1500k -ab 320k
(this assumes that your ffmpeg is compiled with libmp3lame, which it probably
Try googling "ffmpeg"; you will find plenty of usage examples.
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