[mythtv] Internal DVD player hangs after forward jump

[John Pilkington]

John Pilkington wrote:
> This is a longstanding effect but it feels worse now because many other 
> problems with the internal player have been solved:  thanks! It's 
> content-dependent and seems unpredictable, with some recordings 
> affected, others not.
> 
> When the frontend is started as 'mythfrontend' the terminal reports a 
> continuing string of:
> 
> 2008-04-02 22:59:15.962 NVP: Prebuffer wait timed out 10 times.
> 2008-04-02 22:59:17.582 NVP: Prebuffer wait timed out 10 times.
> 2008-04-02 22:59:19.203 NVP: Prebuffer wait timed out 10 times.
> 2008-04-02 22:59:20.822 NVP: Prebuffer wait timed out 10 times.
> 2008-04-02 22:59:22.442 NVP: Prebuffer wait timed out 10 times.
> 
> until it's killed.  Starting with 'mythfrontend -v playback' produces 
> this sort of thing, again until killed:
> 
> 2008-04-02 22:26:55.174 DVDNAV_AUDIO_STREAM_CHANGE: Current Active 
> Stream 0 Track Count 1
> 2008-04-02 22:26:55.174 DVDNAV_HOP_CHANNEL happened.
> 2008-04-02 22:26:55.174 DVDNAV_CELL_CHANGE: pg_length == 83340000, 
> pgc_length == 664207200, cell_start == 580867200, pg_start == 580867200, 
> title == 2, part == 8 titleParts 8
> 2008-04-02 22:26:55.174 DVDNAV_SPU_CLUT_CHANGE happened.
> 2008-04-02 22:26:55.174 DVDNAV_SPU_STREAM_CHANGE: physical_wide==-1, 
> physical_letterbox==-1, physical_pan_scan==-1, current_track==-1, total 
> count 0
> 2008-04-02 22:26:55.174 DVDNAV_AUDIO_STREAM_CHANGE: Current Active 
> Stream 0 Track Count 1
> 2008-04-02 22:26:55.174 DVDNAV_HOP_CHANNEL happened.
> 2008-04-02 22:26:55.174 DVDNAV_CELL_CHANGE: pg_length == 83340000, 
> pgc_length == 664207200, cell_start == 580867200, pg_start == 580867200, 
> title == 2, part == 8 titleParts 8
> 2008-04-02 22:26:55.174 DVDNAV_SPU_CLUT_CHANGE happened.
> 2008-04-02 22:26:55.174 DVDNAV_SPU_STREAM_CHANGE: physical_wide==-1, 
> physical_letterbox==-1, physical_pan_scan==-1, current_track==-1, total 
> count 0
> 
> Currently running the ATrpms build 0.21-185, svn fixes 16840, on Centos5
> 
> John P
> 
> 
I suppose this could be related to the ac3 problems being reported now, 
although the messages above look DVD specific.  The DVD was by 
Mytharchive with a single ac3 stereo track.   I don't have the same 
problem when playing the original mp2 encoded recording. The audio 
behind/ahead confusion also shows during the ac3 menumusic phase of the 
DVD - as does mention of a dvdsub codec.