[mpeg2-dev] Fwd: Re: [RFC] [PATCH] ARM Advanced SIMD motion compensation

[Rémi Denis-C. <re...@vi...>]

On Fri, 18 Sep 2009 15:25:11 +0100, Måns Rullgård <ma...@ma...> wrote:
> I have compared FFmpeg against libmpeg2 myself, and FFmpeg on ARMv7 is
> about 1.5x faster than libmpeg2.  If your experience with VLC is to
> the contrary, there must be a problem in VLC.

Upon closer inspection, it does seem that raw ffmpeg is around 50% faster
indeed, if NEON support is enabled. With VLC however, FFMPEG MPEG2 decoding
is horribly jittery - freezing every so often. I do not know why, and I
have neither time nor skills to investigate this.

Anyway that's orthogonal to optimizing libmpeg2.

-- 
Rémi Denis-Courmont