[FFmpeg-trac] #2005(avcodec:new): Wrong palette colors with DVD subtitles encoding

[FFmpeg]

#2005: Wrong palette colors with DVD subtitles encoding
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             Reporter:  ubitux      |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  dvdsub      |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
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Description changed by ubitux:

Old description:

> Generate a reference file:
>
> {{{
> ./ffmpeg -f lavfi -i testsrc=s=720x480:d=400 ref.mkv
> }}}
>
> Mux DVD subtitles in:
>
> {{{
> ./ffmpeg -i ref.mkv -i ~/fate-samples/sub/vobsub.idx -c copy -y test-
> remux.mkv
> }}}
>
> Here, colors are fine (yellow foreground):
>
> {{{
> mpv   --start=03:00 test-remux.mkv
> mplayer   -ss 00:03 test-remux.mkv
> mplayer2 --ss=00:03 test-remux.mkv
> }}}
>
> Note: mpv¹ and vlc show this properly, mplayer and mplayer2 display them
> in black & white (which is fine), ffplay seems to have various troubles.
>
> Now encoding DVD subtitles in:
>
> {{{
> ./ffmpeg -i ref.mkv -i ~/fate-samples/sub/vobsub.idx -c copy -c:s dvdsub
> -y test-encode.mkv
> }}}
>
> Problem: the colors of the subtitles are negated (or shuffled dunno).
> They also appear differently with players displaying them in black and
> white.
>
> [1]: a mplayer2 fork https://github.com/mpv-player/mpv/,
> https://github.com/mpv-player/mpv/blob/master/DOCS/man/en/changes.rst

New description:

 Generate a reference file:

 {{{
 ./ffmpeg -f lavfi -i testsrc=s=720x480:d=400 ref.mkv
 }}}

 Mux DVD subtitles in:

 {{{
 ./ffmpeg -i ref.mkv -i ~/fate-samples/sub/vobsub.idx -c copy -y test-
 remux.mkv
 }}}

 Here, colors are fine (yellow foreground):

 {{{
 mpv   --start=03:00 test-remux.mkv
 mplayer   -ss 03:00 test-remux.mkv
 mplayer2 --ss=03:00 test-remux.mkv
 }}}

 Note: mpv¹ and vlc show this properly, mplayer and mplayer2 display them
 in black & white (which is fine), ffplay seems to have various troubles.

 Now encoding DVD subtitles in:

 {{{
 ./ffmpeg -i ref.mkv -i ~/fate-samples/sub/vobsub.idx -c copy -c:s dvdsub
 -y test-encode.mkv
 }}}

 Problem: the colors of the subtitles are negated (or shuffled dunno). They
 also appear differently with players displaying them in black and white.

 [1]: a mplayer2 fork https://github.com/mpv-player/mpv/,
 https://github.com/mpv-player/mpv/blob/master/DOCS/man/en/changes.rst

--

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2005#comment:1>
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