ADS Pyro A/V link and dropped frames

bigcreek wrote on 4/3/2003, 4:36 PM
I am consistently dropping 62 frames (repeatedly) on trying to capture from an ADS Pyro A/V link connected to a Sony Video 8 VCR (RCA in) firewire out to ADS firewire card. Computer is a Dell 4500 with 768 meg memory, capture is to 120 gig maxtor with 8 meg cache. (seperate capture drive) CPU is P4 2.4 gig. I have updated to the latest direct x (9.0). Any ideas??

Comments

Cheno wrote on 4/3/2003, 6:50 PM
defrag your video drive and kill any background apps while capturing.

mike
bigcreek wrote on 4/3/2003, 8:19 PM
I completely reformated NTFS the drive. I also tried capturing with Ulead's Video Studio. It still drops frames, just not as much. I'm running XP, with DMA enabled. What background apps pay the most benefit? Can anyone think of something else I should be checking?
bigcreek wrote on 4/3/2003, 8:47 PM
More info. I've hooked up another VCR (VHS) and observed that the drops are still occuring. Also, I've determined that it pauses momentatily when I am simply playing the tape (preview)in the capture application, without actually capturing. Any ideas?
sek0910 wrote on 4/3/2003, 9:14 PM
I capture from analog video and find that sometimes the instability of the analog video signal itself from non professional sources causes dropped frames. You might want to consider a TBC Unit (time base corrector) to stabilize the signal.
Caruso wrote on 4/4/2003, 12:13 AM
Only time I experienced this sort of problem, it was due to a problem with my pointeing device driver (Logitech Marble ball type pointing device). Before you spend a lot of money or disect your system try looking for something simple like this. I found that the Logitech version I downloaded to update my "mouse" did not work well on my computer.

I would get dropped frames, interrupted play, and could even see a periodic interruption of my pointer motion when Vegas wasn't even running.

Of course, this is only a guess, but, it doesn't sound like you are doing anything in terms of video that should cause Vegas to act up . . . that's why I'd look for some system problem, especially device drivers.

I threw out my Logitech drivers and let winxppro install its own generic one. End of problem.

Good luck.

Caruso