[MPlayer-dev-eng] [PATCH] vf_ass: avoid a division

[Nicolas George]

Le nonidi 29 fructidor, an CCXVIII, Dan Oscarsson a écrit :
> > (For ten runs, without subs: 0.66s ± 0.047s, original with a lot of subs:
> > 5.44s ± 0.056, modified: 5.22s ± 0.052; command line:
> > ./mplayer -vo xv -ass -sub big.ass -really-quiet -demuxer rawvideo -rawvideo
> > w=640:h=400:format=y8:fps=50 /dev/zero -endpos 10.1
> > )
> Nice. If you have a .srt file which I assume uses the older osd code to
> display, what results do you get then instead of ass.

The same command line without -ass gives 1.75s ± 0.0023. That means that ASS
is roughly four times slower than OSD. Most of it seems to come from the
blending, not the rendering of the glyps.

But I think there is still a lot of room for optimization in vf_ass.

Regards,

-- 
  Nicolas George
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