[MPlayer-dev-eng] [PATCH] display DVD subtitles

[pl]

On Wed, Nov 21, 2001 at 01:05:31AM +0100, Felix Buenemann wrote:
[...]
> > > also an important limitation:  color+alpha must be less or equal to 255
> > > (because there is no >255 range checking and clipping)
> >
> > OK, this explains all the strange things I was experiencing...  With
> > the following patch subtitles are now stable and readable on all the
> > DVD's I have.  I hope the color picking heuristic is good enough for
> > most person.
> it's bad for me, with the matrix dvd I have I get withe outline sub with 
> tranparent text.
> 
> I also did some simple heuristics like the following:
> alpha0: area around sub/background: always 0 -> transparent
> alpha1: subtitle: always 1 -> opaque
> alpha2: dunno what used for: always 1 -> opaque
> alpha2: subtitle outline: always 127 -> 50% transparent
> 
> color[x] 0 or 15: 0 -> transparent
> else 195 -> nearly opaque
> 
> see attached patch against current cvs.
> 
> Please test if it's correct for you in all cases.
[...]

FWIW:
 - both patchs works for Fightclub DVD:
   atmos's patch: subtitles opaque => OK
   Kim's patch: outline of subtitles white opaque => OK

 - for Being John Malkovich DVD:
   atmos's patch: weird displays, varying on the -vo used (but never
     correct)
   Kim's patch: subtitles look OK (white opaque)

I guess the "Colors need to be parsed from the IFO." comment may be
related to this behavior. (?)

-- 
Best regards,
  pl