[mythtv-users] Jerky Playback on only one channel - OTA HD CBS

Michael T. Dean mtdean at thirdcontact.com
Thu Nov 13 17:48:03 UTC 2008

On 11/13/2008 11:50 AM, Calvin Harrigan wrote:
>     I've been pouring over the archives looking for someone who has had 
> a similar problem.  I've been using mythtv for a little while, about 5 
> years 7 months 14 days 22 hrs 9 mins according to mythweb.  I upgraded 
> to HD early last year (2007) with the purchase of a HDHR.  Everything 
> worked great.  I am able to record HD/SD, play them back fine, no 
> worries.  In extreme cases  I have recorded two HD streams, one sd, and 
> played back another HD simultaneously without fault..  This fall season, 
> I started to record two shows on CBS, a channel that I don't recall ever 
> recording from.  The Ghost Whisperer and The Mentalist.  The shows 
> record fine, but during playback the video jerks something fierce.  
> It'll play fine for a few seconds then slow down/ pause, then pick back 
> up, it does this through the entire show.  I thought maybe it was CPU, 
> but the CPU is almost idling, it doesn't get about 30% total.  I thought 
> it might be something with the deinterlacer, so I checked the detected 
> interlace setting, sometimes it showed up as progressive, other times 
> interlaced.  I know it's supposed to be progressive (1080i), so I force 
> it to interlaced when it detects progressive, but that doesn't fix the 
> problem.  I'm looking for any ideas, things to try to fix the only 
> problem I have with mythtv.

http://www.mythtv.org/wiki/index.php/Prebuffering_pause and if your case 
isn't there, feel free to add it once you figure out the issue.  :)


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