[mythtv-users] Live Playback of HDTV isn't smooth

Kichigai Mentat kichigai at comcast.net
Mon Jan 2 06:39:43 UTC 2006


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On Jan 1, 2006, at 17.22, Byron Poland wrote:

> I've got a backend with 3 hd tuners in it, and a frontend with an
> Athlon 2500+ (overclocked to 2700+)  I'm using an nvidia 6200 to drive
> a westinghouse lvm-37w1 at 1920x1080, with sound going out via ac3
> passthrough.  Recorded programs play back great.  However when I try
> watching live tv, (usually sports) things just aren't right.  Audio is
> fine, but video is somewhere between smooth and jerky.  Its tough to
> describe, but the more you watch it, the more it starts to hurt your
> eyes.....  Sometimes it looks like things are going in slowmotion, and
> then it speeds up then back down.  Anyone have any suggestions?
Well, it sounds to me like your computer can't handle the playback.  
Something tells me an Athlon 2500+ (That's not the clock speed,  
actually) would offer up enough power to handle this, and I think the  
nVidia 6200 does hardware MPEG-2 decoding, but I don't know if it's  
capable of doing HD. But, since apparently recordings play fine, this  
can't be the problem. So, what does this leave us? The only  
specification you haven't mentioned: RAM.

How much RAM do you have? Is it good (IE have you run a RAM test on  
it?)?
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