I'me trying to install (compile) ffmpeg for ubuntu 11.04 by following this guide:
https://ffmpeg.org/trac/ffmpeg/wiki/UbuntuCompilationGuide
Overall it works. Except for some errors with checkinstall due to numbering, which i resolved with this:
I'd say it was installed ok.
But when trying to encode some video with -vpre lossless_slow i get this error:
File for preset lossless_slow not found.
And in fact it doesn't exists. All i have is this:
/usr/local/share/ffmpeg:
libvpx-1080p50_60.ffpreset
libvpx-1080p.ffpreset
libvpx-360p.ffpreset
libvpx-720p50_60.ffpreset
libvpx-720p.ffpreset
libx264-ipod320.ffpreset
libx264-ipod640.ffpreset
Where are all the other presets ? in google usually people have many more presets than i do. What did i do wrong ?
From this post i'd say that they shopuld be there: http://git.videolan.org/?p=ffmpeg.git;a=commit;h=4b82e3cedcfc9871671bb613cd979de6995dcb4e
Thanks a lot !
FFmpeg now accesses the x264 internal presets instead of using text files to emulate them. This is easier to maintain and use. Now you must use the -preset option instead of -vpre. Current presets are: ultrafast, superfast, veryfast, faster, fast, medium, slow, slower, veryslow, placebo. Ignore placebo as it is a joke and a waste of time.
CRF Example:
ffmpeg -i input -c:v libx264 -preset slow -crf 22 -c:a copy output.mkv
Two-Pass Example:
ffmpeg -i input -c:v libx264 -preset fast -b:v 555k -pass 1 -an -f mp4 - && \
ffmpeg -i input -c:v libx264 -preset fast -b:v 555k -pass 2 -c:a libfaac -b:a 128k output.mp4
These examples come from the x264 Encoding Guide community wiki page at ffmpeg.org.