[MPlayer-dev-eng] [PATCH] A new ASS renderer

[Reimar Döffinger]

On Mon, Sep 24, 2012 at 12:10:21AM +0400, Vladimir Mosgalin wrote:
> Hi Reimar Döffinger!
> 
>  On 2012.09.23 at 21:32:07 +0200, Reimar Döffinger wrote next:
> 
> > Have a sample at hand? The subtitles I have around are probably usually
> > too simple.
> > Also a "perf record"/"perf report" trace with MPlayer debug build and debug symbols
> > for the driver binaries might help figuring out the cause.
> 
> We had discussion about this already and you concluded that problem is
> in drivers and it can't be helped and you said perf was useless.
> http://lists.mplayerhq.hu/pipermail/mplayer-users/2011-January/081905.html
> 
> Despite newer drm and mesa releases, it still persists, unfortunately
> (well, I haven't changed video card because I don't see many reasons
> to..).
> 
> That issue, plus this one:
> http://lists.mplayerhq.hu/pipermail/mplayer-users/2011-May/082587.html
> (I continued it on the same thread)
> are the ones why I have to use -vf ass rendering exclusively. I mean,
> karaoke effect is one thing, but having insane slowdown on both 16/9 and
> 4/3 videos just because my monitor is 16/10 is >.< (I finally got rid of
> old 4/3 aspect CRT last summer, but the problem in question is worse on
> 16/10 monitor in either case).

I suspect that is more related to the larger resolution than the aspect.
-msglevel vo=7 can be interesting since it will print some statistics
that can hint at the issue.
I also made a quick-and-dirty hack that should eliminate what I guessed
to be the issue in my tests (though it might need some tuning), but it
made a surprisingly small difference only.
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