[mythtv-commits] Ticket #11634: Frontend shows VERY wrong recording-length after lossless MPEG cutting+transcoding

[MythTV]

#11634: Frontend shows VERY wrong recording-length after lossless MPEG
cutting+transcoding
---------------------------+--------------------------------------
 Reporter:  oli.henning@…  |           Type:  Bug Report - General
   Status:  new            |       Priority:  minor
Milestone:  unknown        |      Component:  MythTV - General
  Version:  0.26-fixes     |       Severity:  medium
 Keywords:                 |  Ticket locked:  0
---------------------------+--------------------------------------
 Just updated from 0.25 to 0.26-fixes.

 Now, when i hit 'i' while watching a recoding, the frontend says a length
 somthing _longer_than_one_day. But the recording itself (after
 cutting/transcoding) ist just 00:20:25 (hh:mm:ss).

 Details:
 - Recoding with DVB-C, MPEG2-Video (720x576 at 25.00fps)
 - Set two cut-points to remove everything before an after the show-of-
 interest.
 - Filesize after transcode is 642'795'524 Bytes (~614 MBytes)
 - RecordedSeek-Table: 2671 Entries, going from mark=0 to mark=30'627 and
 offset=0 to offset=642'762'766. This is a little smaller that the
 filesize.
 - As the maximum mark-value is 30627 an here in europe we have 25fps. This
 results in 1225 seconds = 20:25 (mm:ss)
 - On pressing 'i' the bar shows a length of 26:22:08 (hh:mm:ss).

 I have absolutly no idea from where the frontend has this value.
 Some ideas/calulations i did:
 - 26:22:08 = 94'928 seconds. The recoding is 1225 seconds. This is factor
 77.5 -> no 'magic' number
 - 26:22:08 minus 24 hours = 02:22:08. And then i have a UTC-Offset of 2
 hours (CET, central european summertime)--> 00:22:08. But this is still
 not the expectd 00:20:25...
 - I tried to recreate the seektable with "mythtranscode -b". But as i
 sayed, the seektable seems to be correct.

 Any suggentions, how to make further analysis?

--
Ticket URL: <http://code.mythtv.org/trac/ticket/11634>
MythTV <http://www.mythtv.org>
MythTV Media Center