Some more ffmpeg commands

June 5, 2010

I used ffmpeg a lot lately, and you could already read about that in my previous posts about capturing your screen and converting aiff to mp3 using ffmpeg.

When creating a DVD for a school project I needed to do some movie work, and i of course did use ffmpeg for that. Here are some handy commands that i used:

extract the part of the movie starting from 01:46
ffmpeg -i filename.mp4 -ss 00:01:46 -sameq outfile.mp4

extract the part of the movie until 05:30
ffmpeg -i filename.mp4 -t 00:05:30 -sameq outfile.mp4

take an image and an audio file and put them together as a movie file
ffmpeg -f image2 -i input.jpg -i input.mp3 -ab 128k outfile.mp4

take a huge mov file and create a web-compatible mp4 file out if it, with lower bitrate.
ffmpeg -i filename.mov -ab 128k -b 800k outfile.mp4

transform a flash movie to mp4, keep the quality/bitrate equal to the original
ffmpeg -i filename.flv -f mp4 -vcodec mpeg4 -sameq outfile.mp4

capture your favourite online radio stream, and save it in mp3 format on your hard disk, time limited to 2 hours (7200 sec)
ffmpeg -i http://mp3.streampower.be/stubru-high.mp3 -f mp3 -acodec libmp3lame -ab 128k -ar 44100 -t 7200 outfile.mp3

convert a movie to a gif (apply -ss and -t if needed, see above)
ffmpeg -i filename.mp4 outfile.gif
Read more about high quality gif converts using ffmpeg

that's it :)

Regards
Toon

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One Response to “Some more ffmpeg commands”

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