Help needed with lost frames when capturing with VirtualDub

[jluis_silva]

Hi,

I followed all the instructions provided by vcdhelp web page but I am having a huge amount of dropped frames when capturing with virtual dub from a analog video camera.
To have an idea, I get about 300 dropped frames in a 3 minutes video capture.

My capture card is a MSI Geforce 4 Ti 4400, my processor is a Pentium IV 2.0GHz and my hard disk is 30Gb 7200rpm. I have 256MB DDR 333 and my system is Win XP.

Please, can you give me any possibilities to solve this dropped frames problem?

I already read and tried suggestions made in other posts but they didn't work for me... .

Thanks for your help!

José Luis Silva

[RUASWF]

I am also having the same issue. My computer specs are: Pentium IV 2.26G, 512M PC1066 RAM, Dual Maxtor 40G Striped RAID-0 drives, ATI AIW 7500 video card.

I have tried to verify DMA settings but I can not seem to locate them on the RAID driver.

The system does seem to fly so I doubt it is a computer speed issue. Probably more of a setting - something I am missing.

I just performed a capture (using the Huffyuv v2.1.1) and I captureed 401 frames but dropped 180.

Any suggestions on what we can try would be greatly appreciated.

[vhelp]

You guys left out your:
* video source ie, VCR, Cable or Satalite, etc.
* what resolution are you using, ie 320x240; 352x240; 480x480 . . .

If your video source is from a VCR, then it's probably nothing
much you can do.

However, the most notable cause of frame drops (based on my
experience) is:
* sour installation of Graphics Card drivers, over time, they
become unstable, due to other drivers you install from other
vaiours items, ie, capture cards, encoders, player, etc.
* prior version of Direct-X (but not as important as above)
* and of cource, your Capture Card driver

You should:
* uninstall your Capture Card driver
* uninstall your current Graphics Card driver
* then, set to Standard graphics (640x480 display)
* reboot
............THEN,
* reinstall your Graphics card driver, then
* reinstall your Capture card driver, but not this driver first,
because your Capture driver needs to first know what kind of
Graphics card it is dealing with, and how many features it has
and it's capabilities, ie DirecDraw, Overlay, etc.
By installing a Capture driver first, you almost garantee poor
performance.

Then, the next hurdle in a successful capture is HOW you set up
he capturing settings. But, I wont go there, as you'll figure
it out anyways - hopefully.

-vhelp

[Hong Kong Phooey]

In relation to the first posting, you list a 30GB hard drive. Is this a single partitioned drive,(ie:30GB)? If so,then capturing to your system drive is the most likely culprit. You either need to partition your hard disk, or get a 2nd dedicated harddisk used purely for capturing. Also switching off preview/overlay modes can assist too.