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I would like to extract streams from WebM video files without converting them (re-compression), can somebody recommend any software that can allow this?

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2 Answers 2

up vote 11 down vote accepted

Since WebM is a Matroska subset, mkvtoolnix should let you demux the files. It's open source, cross platform, and the author provides binaries for Windows.

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Thanks, it worked perfectly! –  Karolinger Apr 16 '12 at 19:48

Video files have a container format and codec formats.

Its hard to 'extract' the video bits easily, but it is possible to change the container format to something you can consume whilst not altering the video bits:

ffmpeg using -vcodec copy (and typically -an to strip any audio)

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