[mythtv-users] Audio Synch problems in Myth-10?

[MegaDeTH]

I was assuming you were referring to playback.  

There's currently no way to use an xbox to encode, untill somebody makes 
an mpeg2 usb encoder compatable with linux and usb 1.1 speeds.

L8r Mega

devale at computer.org wrote:

>Mega,
>
>That is because the MPEG-4 algorithm is asymmetric.  While a 700 MHz part
>is sufficient to playback MPEG-4 at 480x480, it takes much more
>horsepower to encode at that resolution.  While I am sure the x-box makes
>an adequate front-end, I doubt it would work well at all as the
>backend/encoder.
>
>John
>
>On Wed, 9 Jul 2003, MegaDeTH wrote:
>
>  
>
>>Wow, I decode with XBOX's, they have 700mhz celerons, my server uses
>>PVR250's and encodes mpeg2 at 720x480 live tv, and 480x480 for
>>recordings.  I play these on the xbox without any skipping or sync
>>problems.  I also transcode them into 480x480 divx video's and playback
>>with mythvideo/mplayer, these also work great.
>>
>>No problems, no skipping, everything is sync'ed up fine.
>>
>>In fact, this little xbox does everything perfect, pretty good for only
>>700mhz with shared memory, and only 180 $ a pop + 20 $ chip!
>>
>>L8r mega
>>
>>
>>
>>John P DeVale wrote:
>>
>>    
>>
>>>I traced my problem to insufficient CPU.  Either the myth process
>>>became heavier in the .9 -> .10 release, or I futzed with a setting
>>>and don't remember.  Now 480x480 MPEG4 is just a bit too CPU intensive
>>>for the 1GHz PIII with both the HQ button things selected.  Backing
>>>off fixed my problem.  I have compiled the codec library with the
>>>latest optimizing compiler from Intel (v7), and will do some tests
>>>tonight to see if I can get some of the performance back.
>>>John
>>>
>>>Steve Hill wrote:
>>>
>>>      
>>>
>>>>>Since switching to myth-10 I have been experiencing bad AV synch on
>>>>>tv recordings (WIN-TV).  Has anyone else experienced this, or have
>>>>>an ideas?  AFAIK, going from .9->.10 is the only change I have made
>>>>>since the problem occurred.
>>>>>          
>>>>>
>>>>I'm having the same problem since upgrading to .10 (well, actually a
>>>>CVS shortly after .10), but I've been fiddling with so much config
>>>>recently I didn't know if it was something I had done.  I'm encoding
>>>>MPEG4 at 416x576 at 2200kbps on an Athlon XP 2100+ with WinTV/PCI.
>>>>
>>>>Also (probably unrelated to version), has anyone else noticed that if
>>>>you set the horizontal resolution to 400 then you get an annoying
>>>>line (probably around 2 pixels high) in the top quarter of the
>>>>screen? (I'm not deinterlacing).
>>>>
>>>>--
>>>>
>>>>- Steve
>>>>http://www.nexusuk.org/
>>>>
>>>>"..Learning that we're only immortal for a limited time.." -
>>>>Dreamline, Rush
>>>>       *** Presented in DoubleVision (Where Drunk) - Futurama ***
>>>>
>>>>
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>>>>
>>>>        
>>>>
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>>>
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>>
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