[mythtv-commits] Ticket #6391: New deinterlacer for perfect image quality when using an interlaced display mode that matches the source

MythTV mythtv at cvs.mythtv.org
Fri Apr 3 08:32:34 UTC 2009


#6391: New deinterlacer for perfect image quality when using an interlaced display
mode that matches the source
-------------------------------------+--------------------------------------
 Reporter:  mythtv at glidos.net        |        Owner:  ijr    
     Type:  enhancement              |       Status:  closed 
 Priority:  minor                    |    Milestone:  unknown
Component:  MythTV - Video Playback  |      Version:  unknown
 Severity:  medium                   |   Resolution:  fixed  
  Mlocked:  0                        |  
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Comment(by mythtv at glidos.net):

 Thanks for getting this in. Just some quick questions:

 1) You mention aligning the opengl and software versions. Which would
 change? I ask because the OpenGL one in its current form does a completely
 different job. It would be no good for my set up. Its purpose doesn't seem
 to be to sychronise interlaces, but to truly deinterlace.

 2) You mention testing 576i and 480i via HDMI. Is that with 576i and 480i
 display modes? Matched source and display mode is the only case this
 deinterlacer works correctly. I ask because someone commented in myth-
 users that few TVs will accept SD modes via HDMI. It would be very
 interesting if that's not the case.

 3) I thought I'd accounted for bottom field first. Any idea what I did
 wrong?

 4) I made a similar change to avoid flickering OSD, but it didn't work
 (for the second occurence of the frame newframe == lastframe, I copied
 both field rather than just the second field). I also noticed that yadif
 suffers from flickering OSD. My changes were on fixes rather than trunk.
 Is that significant?

-- 
Ticket URL: <http://svn.mythtv.org/trac/ticket/6391#comment:3>
MythTV <http://www.mythtv.org/>
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