[mythtv-users] Playback problem with VDPAU

Michael T. Dean mtdean at thirdcontact.com
Sun Sep 18 12:40:31 UTC 2011

On 09/18/2011 07:15 AM, Josu Lazkano wrote:
> 2011/9/18 Michael T. Dean<mtdean at thirdcontact.com>:
>> On 09/17/2011 09:07 PM, Josu Lazkano wrote:
>>> Hello again and sorry this post, I forget to put it on the last post.
>>> I notice that some problems is with vdpau and deinterlacing, this is
>>> the command:
>>> tail -f mythfrontend.log | grep Failed -C 15
>> ...
>>> 2011-09-18 03:03:53.783 VDP: GetFilteredDeint() : vdpau ->    'none'
>> ...
>>> Must I configure the playback profile deeper?
>> You really do want to enable some deinterlacer for when you play back
>> interlaced content.  If you're having performance issues, try one of
>> lower-resource vdpau ones (like not advanced)...  I'm not sure which
>> ones are lowest resource, but you could try a few of them.
>> Mike
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> Thanks Mike, I have different options on Primary and Fallback deinterlacer:
> None
> One Field (1x, HW)
> Bob (2x, HW)
> Temporal (1x,HW)
> Advanced (1x, HW)
> Temporal (2x,HW)
> Advanced (2x,HW)

Those seem to be in approximately the order of resource 
requirements--where One Field is not very resource intensive compared 
to, say, Advanced or Temporal.

> I am trying some of them, but I really don't know which to use. I am
> reading on the wiki
> (http://www.mythtv.org/wiki/VDPAU#Disabling_the_Composite_Extension)
> people use some to SD and other to HD. How could I select the
> resolution on the VDPAU Slim?

At this point--while trying to figure out what works--you should really 
have a simple, custom profile group with a single playback profile 
that's used for all playback (i.e. don't change the example profile 
groups, but create your own--see 
http://www.mythtv.org/wiki/Playback_profiles for more information, 
including how to restore the examples to their default settings if 
you've already changed them).  That way, you always know what profile is 
in use, and you can tell if it works or not on any video you test, and 
you don't have to try to figure out which profile in the group failed to 
work.  Find one that works on all your videos (of all resolutions), and 
then you can play with creating other profiles that are more 
resource-intensive but that still work on lower-resolution videos.  
(Note, though, that resolution isn't really a good indicator of resource 
requirements for those who have mixed video CODECs or very-different 
bitrates of same-CODEC videos.  So, you may just want to find the 
profile settings that work on all videos and use it on all videos.)


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