[Libav-user] ffmpeg H.264 decoding
mc at enciris.com
Tue Nov 20 13:50:23 CET 2012
Carl Eugen, Thanks for the info. This is what I wanted to know.
From: libav-user-bounces at ffmpeg.org [mailto:libav-user-bounces at ffmpeg.org] On Behalf Of Carl Eugen Hoyos
Sent: 20 November 2012 11:12
To: libav-user at ffmpeg.org
Subject: Re: [Libav-user] ffmpeg H.264 decoding
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
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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