[mythtv-commits] Ticket #11305: Playback of home made DVDs from Toshiba rd-xs34 recorder stutters.

MythTV noreply at mythtv.org
Sat Dec 22 17:13:12 UTC 2012


#11305: Playback of home made DVDs from Toshiba rd-xs34 recorder stutters.
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 Reporter:  jactry@…  |           Type:  Bug Report - General
   Status:  new       |       Priority:  minor
Milestone:  unknown   |      Component:  MythTV - DVD Playback
  Version:  0.25.3    |       Severity:  medium
 Keywords:  stutter   |  Ticket locked:  0
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 I used to record movies with the rd-xs34 recorder/burner and never had any
 issue playing them on any DVD player.  Recently I built a HTPC based on
 ASUS AT5IONT-I (nvidia GT218 ION2) and mythtv and discovered that only
 these DVDs have serious playback problem on this platform.  They all
 stutter to a variable  degree (video and audio), some of them being not
 watchable at all, yet playing flawlessly on other players.  I have been a
 mythtv user for years but haven't used the DVD functionnality until now so
 I cannot tell if it's a regression bug.  I can state some certain facts
 here:

 1. Codec used is hardware VDPAU.  Nvidia drivers version: 304.64.
 2. No playback problem with DirectTV mpeg2, h264 mkv, etc.
 3. XBMC and OpenElec, when booted to from a USB key, play these DVDs just
 normally.  So does any dedicated player I tested so far.
 4. On mythtv, the problem can be worked around partially using a different
 decoder like VAAPI.  Doing so improves playback very much but does not
 solve it entirely as playback pauses or picture goes blank from time to
 time. It also uses more CPU than VDPAU.  The attached logs are obtained
 from the same part of "The Matrix" tested with VDPAU and VAAPI.
 5. Commercial DVDs playback is superb (using VDPAU) and the DVD menu
 stuttering problem observed recently appears to be gone.
 6. Different deinterlacer settings have no effect at all.

 I am willing to do any required test or extract a video sample to help the
 mythtv team solving this.

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Ticket URL: <http://code.mythtv.org/trac/ticket/11305>
MythTV <http://code.mythtv.org/trac>
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