DVB sub-pictures wrongly displayed

[TruBzzz]

Hi GStreamer team,

I experienced issues while decoding DVB subtitles contained in mpegTS files: 
Here is a sample of the rendering
http://gstreamer-devel.966125.n4.nabble.com/file/n4172790/dvbsub1.png 
I used the 'dvbsuboverlay' element in following pipeline like
/// gst-launch -v filesrc location=video.mpg  ! mpegtsdemux name=d ! 
//               queue ! mp3parse ! mad ! audioconvert ! autoaudiosink d. ! 
//               queue !  ffdec_h264 ! ffmpegcolorspace ! r. d. ! 
//               queue ! "subpicture/x-dvb" ! dvbsuboverlay name=r !
ffmpegcolorspace ! autovideosink
/

It may be related or not, but I got this logs from the parser:
*/WARNING **: Parsing 2bit color DVB sub-picture. This is not tested at all.
If you see this message, please provide the developers with sample media
with these subtitles, if possible./*
If you are interested, I'll be able to provide a sample media with these
subtitles.

Furthermore, I notice that ffmpeg provide also a plugin 'ffdec_dvbsub' but I
didn't succeed to decode the same file with this decoder. 
Because this ffmpeg dvbsub decoder correctly decode these subtitles in VLC,
I'll probably compare/merge the 2 plugins dvbsuboverlay/ffdec_dvbsub to make
it work.
Here is the expected behavior:
http://gstreamer-devel.966125.n4.nabble.com/file/n4172790/dvbsub2.png 

Regards,



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