[FFmpeg-user] PSNR losses in threaded encoding

Andrew Gora master at io.ua
Sun Nov 11 13:21:52 CET 2012

>> 4-5 is reasonable.
>> Higher number of threads causes noticeable quality degradation.
> I'd say this is very codec type related (An I-frame based codecs
> should loose no quality at all).

Thanks a lot.

-vcodec libx264 -preset slow

There are I-frames in h.264, but does it mean "I-frame based" ?

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