VIRTUAL DUB + WINDOWS 2000 = TONS OF DROPPED FRAMES!!! SOME

[fgtan]

I installed the windows 2000 in my pc (pctv capture card, voodoo 3dfx, 196 mega, 650 pentium III, n a 7.500 rpm HD).
The point is...When I had windows 98 se in my machine, I used to capture using pic video codec, at 720x480 n I get something as 5 dropped frames for an half an hour of capturing...It was really good!!!
After I installed windows 2000, I updated all of my drivers but still gettin tons of dropped frames!!! the funny thing is that, my cpu is working under 20% n "the compression", (that I set as picvideo) is shown as 1:1.
Any ideas what should I do...

[armix]

Go to BIOS, find option PCI Latency Time, and set it to 0.

Save BIOS settings, reboot, and see if that helps. And make sure you are not capturing on your system drive...

[stanwebber]

i imagine that 720x480 is beyond the capability of the microsoft wdmvfw mapper

[jako77]

I have the same problem under XP, even with the latest pinnacle drivers. It worked perfectly under win98se.
To me it is a driver issue. I also tried iuvcr to no avail, since I cannot succeed in trying iuvcr to get an image from pctv.

[ThomasL]

>> "the compression", (that I set as picvideo) is shown as 1:1.

I read that as Uncompressed capture for which you would need Raid SCSI-2 drives as a minimum with m-jpeg codec at full frame rates.

Lower the frame size and/or increase the compression to 5:1 for starters.

[rbruder]

Friends,

the problem resides in WDM vs. VFW. I have posted a message like the same problem. The reply I retype here:

"I'm using the Pixelview TvPro in w2k. Virtual Dub and other progs won't work in high resolution because they require VFW (Video for windows). W2k uses WDM interface. The only prog that i've gotten to work well is IUVCR (available in Tools). It seems to work very well and allows me to capture up to 768X576 res. I suggest u try it out, should work!"

by JDEE

Resources to kill the problem:
Previous topic:
https://www.videohelp.com/phpBB/viewtopic.php?topic=65542&forum=2

IUVCR Link:
http://www.iulab.com/

[]'s
Roberto Bruder
video-br: a lista brasileira de vídeo caseiro
video-br: the brazilian list about home-video
http://yahoogroups.com/group/video-br

[fgtan]

I´ve downloaded the software u mention, installed it but it does not open...it gives me me this message..." unable to create instace of IAMStreamConfig (Video Capture section)"

Any ideas of what shoul I do...

Thanxs again...