id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc	mlocked
2556	Bogus video streams in output PMT	Stuart Auchterlonie	Stuart Auchterlonie	"
Broadcasts from certain transmitters in the UK of Channel 4
are triggering myth to place bogus video streams in the output
PMT. This later causes myth to barf on these recordings.

Some analysis of the sample recording provided.

ffmpeg:
{{{
Input #0, mpegts, from 'ChannelFourBug.mpg':
  Duration: 00:00:03.7, start: 41021.819689, bitrate: 3453 kb/s
  Stream #0.0[0x230], 25.00 fps(r): Video: mpeg2video, yuv420p, 704x576, 10000
+kb/s
  Stream #0.1[0x231](eng): Audio: mp2, 48000 Hz, stereo, 192 kb/s
  Stream #0.2[0x232](eng): Audio: mp2, 48000 Hz, mono, 64 kb/s
  Stream #0.3[0x233](eng): Subtitle: dvbsub
  Stream #0.4[0x4ae], 90000.00 fps(r): Video: mpeg2video
  Stream #0.5[0x40a], 90000.00 fps(r): Video: mpeg2video
}}}

dvbsnoop:
{{{
dvbsnoop -if ChannelFourBug.mpg -nph -pd 7 -s ts | grep ^PID | sort | uniq -c
      5 PID: 0 (0x0000)  [= Programm Association Table]
      7 PID: 2000 (0x07d0)  [= NIT, PMT or Elementary PID, etc.]
   1805 PID: 2201 (0x0899)  [= NIT, PMT or Elementary PID, etc.]
     11 PID: 2203 (0x089b)  [= NIT, PMT or Elementary PID, etc.]
    105 PID: 2307 (0x0903)  [= NIT, PMT or Elementary PID, etc.]
      5 PID: 300 (0x012c)  [= NIT, PMT or Elementary PID, etc.]
   6139 PID: 560 (0x0230)  [= NIT, PMT or Elementary PID, etc.]
    425 PID: 561 (0x0231)  [= NIT, PMT or Elementary PID, etc.]
    149 PID: 562 (0x0232)  [= NIT, PMT or Elementary PID, etc.]
      1 PID: 563 (0x0233)  [= NIT, PMT or Elementary PID, etc.]
}}}

{{{
PID 0x0 = PAT
PID 0x7d0, 0x899, 0x89b = DSMCC
PID 0x903 = PCR
PID 0x12c = PMT
PID 0x230 = Video
PID 0x231, 0x232 = Audio
PID 0x233 = Data (subtitles)
}}}

Analysis of the output PMT yields the following streams
 - PID 0x230 Video
 - PID 0x231 Audio
 - PID 0x232 Audio
 - PID 0x233 Data (subtitle)
 - PID 0x4ae Bogus (marked as type 0x2, video)
 - PID 0x7d0 DSMCC
 - PID 0x40d Bogus (marked as type 0x2, video)
 - PID 0x899 DSMCC
 - PID 0x89b DSMCC

The invalid streams (0x4ae & 0x40d) are only found
in the output PMT, not in the recording itself.

"	defect	closed	minor	0.21	dvb	0.20	medium	fixed	PMT dvb		0