Question

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:

http://judsonsnotes.com/notes/index.php?option=com_content&view=section&layout=blog&id=3&Itemid=54&limitstart=40

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 !

Was it helpful?

Solution

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.

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