[Libav-user] ffmpeg H.264 decoding
Carl Eugen Hoyos
cehoyos at ag.or.at
Tue Nov 20 11:12:11 CET 2012
Malik Cissé <mc at ...> writes:
> My question:
> The decoding goes very fast and CPU usage is low.
> Can I guaranty same performance on similar CPU’s?
I may misunderstand the question, but decoding
is a deterministic process (if that is what you
want to know).
General system load and other factors that are
very difficult to foresee in real life of course
affect decoding speed.
> Is any Hardware acceleration (mmx, GPU, DXVA, etc)
> used to decode the frames?
SIMD (mmx) optimizations are hopefully used on
CPUs that support it, hardware decoding is only
used if you explicitly requested it.
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