Hi all,

I'm looking into ripping my DVD collection into WebM format (VP8 video
via libvpx, and vorbis audio via libvorbis).  The following command
works, in that it gives me a suitable quality video with audio in sync:

ffmpeg -i input.vob -aspect 16:9 -vpre libvpx-720p -aq 5 -f webm -y \
  output.webm

However, it takes a long time to encode.  It averages around 6fps.
Bearing in mind that the source file is 24fps, this means that encoding
takes 4 times as long than actually watching the DVD.

This may be usual in the video encoding world, but I've only ever had
experience of encoding audio, which typically happens at a faster rate
than it takes to listen to.

So, I guess my questions are: 1) am I expecting too much, 2) Does other
people's experience match mine or 3) How do I speed this process up?

Thanks,

Matt.

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