annoying frame dropping

[andybno1]

when I capture in vdub, I keep getting annoy frames dropped. I'm using these settings and capturing at 640 X 480 with deinterlace - blend fields together fitler with the disk I/O set at chunk size - 16mb and chunks in buffer set to 3 giving me a total buffer of 49152k with disable windows while buffering. Every time I capture I am always dropping frames, its not really alot but still I'm dropping frames say I capture 3 or 4 mins I can drop about 10 - 20 frames, if I capture a 2hr movie I can look at dropping 40 - 60 frames.

Is there a way to reduce or stop frame dropage without changing resolution?

[hwoodwar]

I suggest you go through:

How to Tune your system for ATI capture cards

http://www.vcdhelp.com/forum/userguides/81808.php

I realize you probably don't have an ATI card, but most of the steps in the document apply to capturing "in general".

Also, it sounds like you may be trying to use the deinterlace and some sort of blend fields filter (which I can't find on my copy.) If you are using any filters during capture, disable them and run the file through the filters after capture.

Is there any chance your hard drive is close to full? I noticed that you only have a 20gig drive and capturing avi files can take up a lot of space (I do a 1 1/2 hour capture with the HuffyUV codec and the file ends up being about 22-25gig @ 352 x480 res.)

[andybno1]

I have 13.2 gigs free on hd, and if you care to not on the screen shot I am using the M-JPEG codec.

I just started going through the help guide, and I don't see any dma box in my hd properties, any hints to where it is?

[hwoodwar]

Andybno1:

I've never really dealt with the morgan MJPEG codec I'm partially colorblind and I missed your link. Sorry about that.

For the DMA setting, go into device manager, under IDE ATA/ATAPI controllers, right click and select properties for the Primary IDE channel, and go to the advanced settings page. "DMA if available" should be an option under Transfer mode for Device 0. Select it, if it's available, and click OK at the bottom of the page. You may have to reboot afterwards.

[andybno1]

cheers, I found it and it was already selected.

[almostaborted]

are you capping onto an independent drive?

i don't know why this is an issue...40-60 dropped frames in two hours is pretty good actually...do the math, you're dropping at most .028% of capped frames....i assumed you're capping at 29.97 fps or so...