Dropping frames after 24mins...CPU problem?

[Beanboy]

Here's my setup:
- P4 @ 1.8 GHz
- 512 MB DDR 333Mhz RAM
- ASUS MBoard
- WD harddrives - IDE - 7200RPM
- TV98 tuner/capture card on PCI - has the BT848 chip
- freshly installed XP - only capturing software installed - no anti-virus
- un-needed services stopped - RAM useage prior to capture = ~78MB

- tried capturing from different sources...VHS on comp, Hi8 on S-Vid
- capture software - Nero Vision Express 3
- capture settings - 640x480, YUY2, 29.97 fps, compress to MPG2

Summary of problem...problem is consistent...tried it 6 or more times
- before 23 mins of capturing, 0 frames dropped, peak CPU useage of 82%, RAM useage 167MB
- sometime after 23mins, frames start dropping, and worsens over time...
- 25mins - 6 frames dropped, CPU useage 69-83%
- 26 mins - 35 frames dropped, CPU useage 69-85%
- 27 mins - 150 frames dropped, CPU useage 60-80%
- 29 mins - 700+ frames dropped, CPU useage 44-90%

In all this, the processor temp did not exceed 45 C. CPU not overclocked for this test.

What I have noticed, is that when the system is overclocked, it starts dropping frames around the same time, but at a much higher rate. Is my CPU faulty? Or maybe too much overclocking in the past? I have never seen the CPU temp exceed 50C, even when overclocked.

Any ideas, suggestions, or whatever, would be appreciated! Thanks.

Len

[Bjs]

Capture to mpeg using nero ... even at 640x480 you are pushing the system with a processor at 1800mhz , that need's to be up and over 2 gigahertz .

The processor is adequate if you capture to avi compressed format at that size , even full d1 res , then convert it later to mpeg2 using any one of the free encoder's like bbmpeg , quenc .. and other's .

Nero is not a good product for capture , consider using another product , one that is lighter on resource's when running .

You are also capturing at 29.97fps ... which will also add to your problem's and is why I recommend you capture into avi format and convert later .

A full movie using the right setup , can consume roughly about 3 to 4 gigabyte's at good quality .

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My old p3 800 , with only 128mb's memmory , and a 32 mpeg asus v6600 vivo was able , using the right setting's in vdub able to capture at full d1 resolution at 25fps , and rarely broke the 70% cpu usage barrier and never a dropped frame or audio sync issue ... even had it working under xp without problem's .

Pity , it was a very good card that thing .

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Overclocking is never a good idea and can , no , will cause problem's later .

Also check if you power supply has been running warmer than when first purchased , it to can cause issue's ... I have had them blowing very hot air on occassion ... soon after , they expire ... and wouldnt you know it , the last one expired a day after the warrantee ran out ...

[harley2ride]

Sounds like either the ram is being overtaxed, or the cpu. Just for giggles, try booting into safe mode and doing the capture. There are quite a few windows processes that always run in the background, and they could be kicking in during the capture process and eating up ram.