Massive Frame Loss

[LavaJockey]

I'm trying to capture video at 320x240 resolution, 30 frames per second, and
am dropping about 70% of the frames. Something is very wrong. I turned off
audio capture, so it's not an audio sync problem. What else could it be?
My system is: Athlon 1400, 512 mbytes memory, 7200 RPM disk, Windows 2000.
Video capture card is an Osprey 220. Any ideas at what I should look at
find/fix the problem?

[Greg12]

it might be the OS

[Baerchen]

Does this happen all the time or does it start dropping frames after like 30 minutes ?

[nmisys]

I've been battling with exactly the same problem for months now and tonight decided to try and solve it.

Two things fixed it for me. I have the WinTV card, so I ran HWCLEAR to eliminate all traces of the WinTV drivers from my machine. I then downloaded the latest driver.

I also found that my video card driver was out of date so I downloaded the latest update for Win2000 for that. I also switched on the option to enable bus mastering on the video card.

Finally, I installed Direct X 8.1

Now after trying to capture again, I get about 1 frame dropped every 450 (less than 0.004%) which is fine by me, I'm running a 1GHz Athlon with 512Mb RAM. CPU usage during capture is now down to about 25% from 95%.

I'd say look at your video card driver and possibly update that.

Cheers
Graham