[FFmpeg-devel] DVB Subtitles Live transcoding

Liam Carter liamgcarter at gmail.com
Wed Apr 13 16:18:16 CEST 2016

Hiya All.

We are having issues with DVB Subtitles.

Our streams come from MUMUDVB and if played in VLC directly the subtitles
appear as a subtitle stream that can be turned on and off.

When we pass the stream through FFMpeg the subtitles no longer appear.

We have tried using the map feature

-map 0:0 -map 0:1 -map 0:8 -scodec copy

0= video
1= audio
8= dvb subtitles.

Stream #0:0: Video: mpeg2video ([2][0][0][0] / 0x0002), yuv420p, 720x576
[SAR 64:45 DAR 16:9], q=2-31, max. 15000 kb/s, 25 fps, 25 tbr, 90k tbn, 90k
    Stream #0:1(eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo,
224 kb/s
    Stream #0:2(eng): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
  Stream #0:8 -> #0:2 (copy)

When we open in VLC the subtitle option is available yet the subtitle
doesn't show.

It is if the subtitles are not being passed correctly as a stream.

Not sure how to proceed as we have been at this for ages and exhausted all
of the internets resources lol (well it feels like that).

Any help appreciated


More information about the ffmpeg-devel mailing list