У пт, 2009-08-07 у 16:21 +0200, Stephan Assmus пише:
> Hi all,

> To sum up, I would love some feedback from other people here, if keeping 
> AC-3 and MPEG4 encoding enabled in our release would be too risky 
> regardless of "--enable-nonfree=no" leaving them enabled, and if someone 
> could recommend a specific SVN revision I could safely upgrade to, that 
> would be awesome!
> 
https://lists.mplayerhq.hu/pipermail/libav-user/2009-April/002965.html
here is some pointers about how to pick good version to upgrade.

It's hard for me to say something about AC-3 and MPEG4 as i didn't quiet
understand what did you do. If I get it right than you configured ffmpeg
and than you enabled encoders/decoders that should be build only with
--enable-nonfree. If that is what you did, than it hes no point. This
configuration key is only to make it easier to you to build library with
desired licence. If you build any component that is marked as "non free"
than likely you'll get library with not redistributable license no
matter how it was compiled as some components of this library will you
code that is covered by some proprietary license. I'm not an expert and
this is my opinion only.

P.S. AFAIK, AC-3 is replaced in current svn with LGPL implementation but
you should check it by yourself as I didn't follow this topic very
precisely. 

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