[FFmpeg-trac] #3247(avcodec:new): Transparent subtitle outlines (IDX/SUB) upon conversion to XSUB become solid, and colors become b&w

[FFmpeg]

#3247: Transparent subtitle outlines (IDX/SUB) upon conversion to XSUB become
solid, and colors become b&w
------------------------------------+-----------------------------------
             Reporter:  userid99    |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  xsub        |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
------------------------------------+-----------------------------------
Changes (by cehoyos):

 * keywords:   => xsub
 * priority:  important => normal
 * component:  undetermined => avcodec
 * reproduced:  0 => 1


Comment:

 For future tickets:
 Please always provide a command line that allows to reproduce the problem
 including its complete, uncut console output.
 Please do not provide output files unless a developer is unable to
 reproduce and asks for the output file.
 Please do not attach more input files than necessary, it imo only leads to
 confusion.

 This is currently a bug because the intended warning in the code is not
 shown, this will be fixed soon.
 {{{
 $ ffmpeg -f lavfi -i testsrc -i transpidx.idx -scodec xsub -t 14 out.avi
 ffmpeg version N-59400-g8335016 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Dec 28 2013 22:21:53 with gcc 4.3 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      52. 59.100 / 52. 59.100
   libavcodec     55. 46.100 / 55. 46.100
   libavformat    55. 22.100 / 55. 22.100
   libavdevice    55.  5.102 / 55.  5.102
   libavfilter     4.  0.103 /  4.  0.103
   libswscale      2.  5.101 /  2.  5.101
   libswresample   0. 17.104 /  0. 17.104
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, lavfi, from 'testsrc':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 320x240
 [SAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
 Input #1, vobsub, from 'transpidx.idx':
   Duration: N/A, bitrate: N/A
     Stream #1:0[0x0](de): Subtitle: dvd_subtitle, 640x480 (default)
 Output #0, avi, to 'out.avi':
   Metadata:
     ISFT            : Lavf55.22.100
     Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 320x240 [SAR
 1:1 DAR 4:3], q=2-31, 200 kb/s, 25 tbn, 25 tbc
     Stream #0:1(de): Subtitle: xsub (DXSB / 0x42535844), 640x480 (default)
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo -> mpeg4)
   Stream #1:0 -> #0:1 (dvdsub -> xsub)
 Press [q] to stop, [?] for help
 [avi @ 0x91f31e0] Encoder did not produce proper pts, making some up.
 frame=  350 fps=206 q=2.6 Lsize=     559kB time=00:00:14.00 bitrate=
 326.9kbi
 }}}
 The following work as expected
 {{{$ ffmpeg -f lavfi -i testsrc -i transpidx.idx -scodec dvbsub -t 14
 out.ts}}}
 {{{$ ffmpeg -f lavfi -i testsrc -i transpidx.idx -scodec dvdsub -t 14
 out.vob}}}
 although the last frames look different indicating a possible problem.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3247#comment:3>
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