Capture card causing stuttered playback ?

Spirit wrote on 6/27/2002, 8:29 PM

I just moved my Osprey 210 analog capture PCI card from my 866MHz PIII to my 1.8MHz P4. Fiunny thing is that on the PIII (which is has all sorts of junk on it) the playback of AVI files was 100% smooth.

But on the P4 I'm suddenly getting the stutters. Even just playing back small AVI files using the default media player gives me masses of dropped frames, whereas before I installed, playback was perfect. Playback in VV3 is now often stuttering. before now I'd NEVER seen a single stutter in VV3. Perhaps worse, VV3 doesn't stutter all the time, just about 50% of the time. But the mediaplayer ALWAYS drops frames.

Also, strangely enough, the card prevents the default media players from outputting audio. I have to disable the card in the device manager before I get audio output. Output in all my apps is OK (AcidPro3, SF6, VV3). Curious methinks. Could that be a clue to something ?

I've wracked my brains trying to think of why, but have come up with nothing. Why would my card cause this ? Did the installation overwrite something ? Is it a problem on the PCI bus somehow? Does something in XP need tweaking ? (I tweaked it primarily for audio).

I'm thinking I should uninstall the Osprey card and hopefully everything will go back to normal. But for obvious reasons I'd like to have capture and editing on the same machine !

Any thoughts no matter how odd are appreciated - I'm blank . . .

Comments

Spirit wrote on 6/28/2002, 7:55 AM

Any one have any ideas at all ? I don't care how marginal they might be - I'll give anything a go at this stage . . .

deef wrote on 6/28/2002, 10:38 AM

Hi Spirit, this does sound strange...I'd try uninstalling the card and it's drivers. Then see if the problem goes away. If it does go away, then there's something either going on with the IRQ that the Osprey uses possibly conflicting with your sound card. I use an Osprey DV 500 and an Osprey 100 on Win2k without any troubles, so you may want to see if Viewcast has updated drivers for WinXP.

Hope this helps.

Spirit wrote on 6/28/2002, 11:53 AM

Thanks for the reply,

I've got the latest drivers off their site . . . I'll trying fiddling the IRQs (but they seem ok)

Otherwise I suppose I'll just have to take the card out and uninstall the software and see what happens. A damn shame though, it captured brilliantly with VV3.

Spirit wrote on 6/29/2002, 4:30 AM

It turns out that if disbale both the audio and video parts of the Osprey capture card in the device manager everything returns to normal !

Does anyone knows what this means though ? Does it mean that it is not a software problem, but rather some sort of arcane routing problem ?

I suppose after I capture I can just disable the card, but it doesn't seem right does it ?