[mythtv-users] current status of HDTV patches

[John Sturgeon]

I read somewhere (it was either this forum or the pcHDTV forum) that in 
order for mythfrontend to effectively use the CPU to do the decoding 
(since XvMC is disabled) it might be necessary to bump up the priority 
of the process.  This actually helped me a bit:
# nice --10 mythfrontend

One gotcha though is that running mythfrontend as root, you end up 
reading root's configuration files for mplayer/xine/etc...

--
John Sturgeon <><

 then it Daniel Walton wrote:

>I applied Daniel's patches last night and the problem where the video would play
>slowly when the status bar was up and XvMC was in use has been been fixed.  I
>find that I can't use XvMC at all though, the picture has a very jerky feel to
>it.  My CPU is fine and I'm not getting any errors from the frontend but it
>seems like the picture is pausing for a split second every couple of frames and
>that is making it so the video doesn't playback smoothly.
>
>Daniel
>
>On Tue, 6 Apr 2004, John Patrick Poet wrote:
>
>  
>
>>On Wed, 7 Apr 2004, Brian May wrote:
>>
>>    
>>
>>>>>>>>"Daniel" == Daniel Walton <dwalton at cisco.com> writes:
>>>>>>>>                
>>>>>>>>
>>>    Daniel> I found some threads in Feb where danielk talked about a
>>>    Daniel> series of patches he has for HDTV:
>>>
>>>    Daniel> http://www.mrl.nyu.edu/~danielk/mythtv/
>>>
>>>    Daniel> Have these made it into cvs by now or are all myth HDTV
>>>    Daniel> users patching these in themselves?  Any other patches I
>>>    Daniel> should know about for HD?
>>>
>>>Last I tried HDTV, I got poor (read: unusable) audio quality, and the
>>>increased chance of the back-end crashing. Hmmm... Come to think of
>>>it, I will see if I can reproduce the crash with debugging info...
>>>
>>>Could the audio issue be related to these patches?
>>>
>>>Also I see a reference to "the hdtv signal check patch", where can
>>>this be found?
>>>      
>>>
>>I am actually not sure which of Daniel Thor Kristjansson patches have been
>>incorporated into the cvs at this point.  I am pretty sure the "the hdtv
>>signal check patch" IS in there.
>>
>>It used to be, that if I tried to tune to a station which was not
>>broadcasting, mythfrontend would "lock up", and have to be killed.
>>Now, when that happens, mythfrontend will return after about 15 seconds, and
>>let you exit gracefully.
>>
>>HDTV works great for me.  The only audio problems I have, are caused by the
>>local CBS affiliate.  They claim they have their audio problems fixed at
>>this point, but I have not watched a show to verify.
>>
>>Daniel Thor Kristjansson himself has audio problems on his WB station.  I
>>don't know if his problem is a Myth problem (HD-2000 driver?) or a station
>>problem.
>>
>>The only Myth related audio problems I see, happen when changing channels.
>>I cannot watch live TV and change the channel, without getting lots of
>>prebuffering pauses.  If I [ESC] out to the menu, and then return to live
>>tv, the problems go away -- until I change channels again...
>>
>>I have Myth setup to record seven HDTV programs a week.  It has not let me
>>down in a long time.
>>
>>It is critical to have all of your HD frequencies configured properly in
>>Myth.  If any of them are off, that can caused the backend to get very
>>confused.
>>
>>
>>John
>>
>>    
>>
>
>  
>
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