[MPlayer-dev-eng] Make ffmpeg MPEG1/2 decoder the default?

[Michael Niedermayer]

On Tue, Feb 19, 2008 at 01:30:22AM -0500, Rich Felker wrote:
> On Tue, Feb 19, 2008 at 06:55:30AM +0100, Michael Niedermayer wrote:
> > On Mon, Feb 18, 2008 at 10:18:38AM +0100, Diego Biurrun wrote:
> > > On Sat, Feb 16, 2008 at 03:38:36PM +0100, Reimar Döffinger wrote:
> > > > libmpeg2 may be still slightly faster (though probably not on the newer CPUs),
> > > > but it is quite crash-happy and otherwise buggy (see also 34582.mxf in
> > > > incoming).
> > > > Thus I am for making FFmpeg decoder the default, any objections?
> > > 
> > > I'm not too convinced of this since libmpeg2 was still faster the last
> > > time I tried and now we have a pending patch with further speedup.  I
> > > propose running benchmarks on many different CPUs instead.  Let's find
> > > out which one really is the fastest.  Maybe we can motivate somebody to
> > > try making FFmpeg speedier...
> > 
> > As it seems noone mentioned it yet in this thread ...
> > dont forget 
> > -lavdopts fast
> 
> Will this cause any visible problems?

Ive never seen any, that said it could. If you find some please upload
a short sample causing them.


[...]

> > disable ENABLE_GRAY (mplayer enables it by default)
> 
> Can you elaborate? I'm not familiar with this setting..

copy and paste from MPlayer configure:
----
/* Support for grayscale encoding/decoding in FFmpeg (makes color slower) */
#define ENABLE_GRAY 1
----

Also when doing benchmarks it might be usefull to try more than the default
idct, others may be faster on some CPUs ...

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

It is not what we do, but why we do it that matters.
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