[mythtv-users] Re: Tearing in playback
William Uther
willu.mailingLists at cse.unsw.edu.au
Fri Jan 7 18:12:50 EST 2005
On 08/01/2005, at 12:52 AM, Tom Hughes wrote:
> [snip]
> That sounds likely. I'd try checking the other setting with:
>
> sysctl dev.rtc.max-user-freq
heh:
% sysctl dev.rtc.max-user-freq
dev.rtc.max-user-freq = 64
> If it is less than 1024 then that is probably the problem. You
> can increase it with:
>
> sysctl -w dev.rtc.max-user-freq=1024
>
> and add it to /etc/sysctl.conf to make it permanent.
2005-01-08 09:55:33 nVidiaVideoSync: Could not open device
/dev/nvidia0, No such file or directory
2005-01-08 09:55:33 DRMVideoSync: Could not open device /dev/dri/card0,
No such file or directory
2005-01-08 09:55:33 Using audio as timebase
2005-01-08 09:55:33 Video timing method: RTC
Looks like that was it. :)
Quick question: how does RTC sync work?
RTC stands for Real Time Clock, right?
I assume that the frequency has to be higher than the total number of
horizontal lines in your X modeline. If myth then got a known sync
signal at any point in the image display it could use that to find the
blacking period. Do you know at what point in the frame the sync
signal is sent and how myth gets it?
Thanks for your help,
Will :-}
--
Dr William Uther National ICT Australia
Phone: +61 2 9385 6357 School of Computer Science and
Engineering
Email: willu at cse.unsw.edu.au University of New South Wales
Web: http://www.cse.unsw.edu.au/~willu/ Sydney, Australia
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