[mythtv-commits] Ticket #2954: Update ivtv header + recording profiles

MythTV mythtv at cvs.mythtv.org
Sat Jan 27 20:02:27 UTC 2007

#2954: Update ivtv header + recording profiles
 Reporter:  danielk  |        Owner:  danielk
     Type:  defect   |       Status:  new    
 Priority:  minor    |    Milestone:  0.21   
Component:  mythtv   |      Version:  head   
 Severity:  medium   |   Resolution:         
Comment (by danielk):

 I've attached an updated patch.
 With my PVR-250 captions work at either 720x480 & 480x480 with the
 following ivtv drivers 2.0, 4.9, 6.6, 7.3 and 8.2. I could not test any
 later ivtv's due to an problem in later Linux kernels with my SATA

 With my PVR-250 480x480 looked fine, some google searches revealed that
 this was primarily a problem when using PVR-150 or PVR-500 and when using
 the temporal_filter. This was apparently enabled by default in 9.1. I
 think enabling this when it results in poor looking video is a driver bug
 that should be addressed there by disabling this filter when capturing
 smaller frames. In light of this, I've removed the dbcheck update instead
 of trying to make it more specific to people who have not changed the
 settings from the defaults. I've left in the full frame default for the
 ivtv cards, since I've seen many reports in my Google searches that the
 filtering does improve video quality, even if it does have this
 unfortunate bug.

 I also noticed that the various drivers I tested had problems with TS mode
 recording. This is feature, along with some other recording modes, is
 completely absent in 8.2, I will be asking Hans about this before taking
 any further action on this issue. Finally, MPEG Layer 1 sound does not
 appear to work at all in with any of the drivers I tested; again I will be
 asking Hans Verkuil about this.

Ticket URL: <http://svn.mythtv.org/trac/ticket/2954#comment:2>
MythTV <http://www.mythtv.org/>

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