[mythtv-users] playback is smooth, yet lacking... seems like smootly missing frames

Bill Bill at explosivo.com
Wed Jan 31 19:18:17 UTC 2007

Sorry if this is obvious.  I am not sure what to even stfw on for something like this.  I've tried, but nothing seems to match what I would describe this as... 

I have a 2.4ghz P4, running a pvr500, pvr350.  Output is from an nvidia fx5200 (AGP 4x) via DVI-D to an LCD TV (westinghouse).  I am outputting at 1080p.  

My sources for video are standard tv into the tuners and recorded at 720x480. 

Now, I am absolutley thrilled with the quality of the recordings and how well mythtv scales it up for the LCD at hi-res.

But, it seems a little "off".  If I had to describe it, I would say that something is very smoothly and evenly dropping frames.  Not the kind of dropping where a whole handful goes away, and its noticable, but more the movements of the people on the screen just get a bit jerky... but not terribly so.  

I am really having trouble describing this.  I guess if there is 24 frames a second, it would be dropping maybe every 5th one or something...

Is this something that it does when it gets overworked or something?  The cpu is at about 69% during the playback.

I want to try Xvmc tonight to see if I can get it down a bit, and hopefully the picture wont suffer.

Can anyone tell me:

1) What to call this so I can stfw more effectively

2) Tell me I am not crazy

3) Is this a feature of an LCD?


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