[mythtv-commits] Ticket #10442: MythFrontend jittery video playboack on 2010 Mac mini

MythTV noreply at mythtv.org
Mon Mar 12 16:08:51 UTC 2012

#10442: MythFrontend jittery video playboack on 2010 Mac mini
 Reporter:  joenyland@…       |           Type:  Bug Report - General
   Status:  new               |       Priority:  minor
Milestone:  unknown           |      Component:  MythTV - Video Playback
  Version:  0.24.2            |       Severity:  medium
 Keywords:  mac frontend      |  Ticket locked:  0
 I have posted this to the mythtv-users mailing list, but unfortunately no-
 one has been able to offer any advice, other than installing Ubuntu on the
 Mac mini, which isn't a solution.

 Basically, 95% of the channels and recordings I watch (both live TV and
 recordings) have jittery playback - no pixelation, but motion is not
 fluid. This makes 95% of the stuff I watch/record in MythTV unwatchable on
 my Mac mini, which is my main frontend system.

 I am able to play back the same recordings files on the same system in
 XBMC (via MythTV's UPNP), VLC (again, via UPNP) and on other frontends
 too, without any issues.

 There seems to be some issue with MythTV's ability to utilise the GPU on
 my model of Mac mini, where other applications can utilise it fine. I can
 play back 1080p content with all the bells and whistles in the likes of
 XBMC, etc. so the GPU is definitely capable of what I am giving it.

 Primary frontend
 Mac mini (Mid 2010)
 Core 2 Duo 2.4 GHz CPU
 4GB RAM 1067 MHz DDR3
 NVIDIA GeForce 320M 256MB GPU
 OS X Lion (10.7.3)
 MythFrontend jyavenard/backports/fixes/0.24 [v0.24.2-216-g247c4f1-dirty]

 Dell PowerEdge T110II
 Xeon E31230 3.2 GHz (Quad core +HT) CPU - 4 cores assigned to MythTV
 backend server
 1GB RAM 1333MHz DDR3 assigned to MythTV backend server
 Recordings stored on 3 1TB Seagate drives in md RAID5
 Ubuntu 10.04 LTS x64
 MythBackend fixes/0.24 [v0.24.2-19-g02dd6ee]
 HDHomeRun HDHR3 as the TV source - UK Freeview, so SD quality

 I should be able to post a sample clip later on, as I believe this will
 help support my description of the issue.

 If there are any other logs/versions/traces that I could provide, which
 would be useful, please let me know.



Ticket URL: <http://code.mythtv.org/trac/ticket/10442>
MythTV <http://code.mythtv.org/trac>
MythTV Media Center

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