[FFmpeg-trac] #2223(undetermined:new): ffmpeg converts dvb_teletext to dvb_subtitle when -c copy is used

[FFmpeg]

#2223: ffmpeg converts dvb_teletext to dvb_subtitle when -c copy is used
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             Reporter:  burek        |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by Cigaes):

 AFAICS, this is reproducible with the sample you uploaded for ticket 2086
 [http://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket2086/].

 {{{
 Input #0, mpegts, from '/tmp/teletextsubtitles.ts.part':
   Duration: 00:00:15.36, start: 0.091256, bitrate: 15069 kb/s
   Program 137
     Stream #0:0[0x30]: Video: h264 (Main) ([27][0][0][0] / 0x001B),
 yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
     Stream #0:1[0x40](ita): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 384 kb/s
     Stream #0:2[0x41](und): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 384 kb/s
     Stream #0:3[0x6a](ita): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006)
 Output #0, mpegts, to '/tmp/out.ts':
   Metadata:
     encoder         : Lavf54.61.104
     Stream #0:0(ita): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006)
 Stream mapping:
   Stream #0:3 -> #0:0 (copy)
 }}}
 {{{
 Input #0, mpegts, from '/tmp/out.ts':
   Duration: N/A, bitrate: N/A
   Program 1
     Metadata:
       service_name    : Service01
       service_provider: FFmpeg
     Stream #0:0[0x100](ita): Subtitle: dvb_subtitle ([6][0][0][0] /
 0x0006)
 }}}

 I suspect this is a muxer problem: ffmpeg does not recode the subtitle
 packets, it only incorrectly writes the nature of the stream.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2223#comment:2>
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