[mythtv-users] approve deinterlace filter?

[Doug Larrick]

Greg Woods wrote:
> On Tue, 2008-05-06 at 09:03 -0600, Greg Woods wrote:
>> On Tue, 2008-05-06 at 07:32 -0400, Doug Larrick wrote:
> 
>>> Run with "--verbose
>>> playback" and post the messages printed when setting up the video
>>> renderer (including the frame & refresh rates)
>>>   Also post the output of
>>> 'xvidtune -show'
>> Thank you; I will do this when I get home tonight.
> 
> I tried to post this last night but the playback log was too big and my
> posting was held. Here is the xvidtune -show output, and an edited
> version of the playback log is attached.
> 
> --Greg
> 
> 
> "1920x1080"    74.25   1920 2008 2052 2200   1080 1084 1094 1124 +hsync
> +vsync interlace

74.25 / ((2200 / 1000) * 1124 * 1000)) = 30.0267 Hz refresh rate,
interlaced.  This is fine.  You would be better off if you could arrage
(30 * 1000/1001) = 29.97 fps for US ATSC material, but just over 30
should not be an issue.

> 2008-05-06 19:11:18.242 Refresh rate: 33303, frame interval: 33366

Refresh rate of 33303 usec per frame, vs. frame interval of 33366 usec.
 This is also fine.  Bob deint should work for you, though it appears
you still have 'onefield' selected.  Can you look for similar messages
with bob turned on?

> 008-05-06 19:11:18.241 nVidiaVideoSync: VBlank ioctl did not work,
> unimplemented in this driver?
> 2008-05-06 19:11:18.242 DRMVideoSync: Could not open device
> /dev/dri/card0, No such file or directory
> 2008-05-06 19:11:18.242 RTCVideoSync: Could not set RTC frequency,
> Permission denied.
> 2008-05-06 19:11:18.242 Using audio as timebase
> 2008-05-06 19:11:18.242 Video timing method: USleep with busy wait

You would be better off with OpenGL vsync (which you appear to have
deselected or not compiled in) or even RTC vsync (look in the archives
for these).  USleep uses a fair bit of CPU time.

> 2008-05-06 19:11:18.139 Realtime priority would require SUID as root

Getting /etc/security/limits.conf set up with rtprio for MythTV would be
icing on the cake, resulting in smoother video.

-Doug

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