A / V out of sync

Gerard_SP wrote on 4/16/2004, 4:12 AM

Hi all, got the above problem developing gradually when the video clips are played continuously. Noticed video jittering occationally as if when frame dropping occurs. What would be the cause.

System: P4, W2K pro, 256MB DDR RAM, Nvidea Ti 4600 VGA, Gigabyte MB with 160GB Raid 0 used to store captured footage, 120GB single drive used as video archive and project file holder for applications. OS in separate HDD. Applications in separate HDD. Virtual memory spreaded accross system drive and the Raid.

Thank you.

Comments

rebel44 wrote on 4/16/2004, 5:05 AM

It you refer to capture then the only thing can go wrong is the hardware.
What are you using to capture and analog or digital.If you are using separate drive with no system file on it then the other thing could be the memory or capture device.I use "mem86" program to test my memory. The only one program what will really test it.Make shure that you do not have a swap file on capture drive and check the capture device.

JohnnyRoy wrote on 4/16/2004, 5:13 AM

> Noticed video jittering occationally as if when frame dropping occurs. What would be the cause.

You say "as if when frame dropping occurs" but are you guessing or did you actually have dropped frames while capturing? Dropped frames will cause the audio to drift over time if there are enough of them. Also you didn’t say how you were capturing and in what format. DV? Analog? MPEG? MPEG captures are notorious for audio sync problems.

~jr

Gerard_SP wrote on 4/16/2004, 4:43 PM

Thank you for your replies. They are excelent.

I found the problem. It was the swap file addition I did recently. I included the raid drives too. What I did was reinstalled Vegas 4 today and it's back to normal.

I used the VidCap4 to capture. Capturing is ok no prob.

This is a bug in Vegas I guess, coz the other editing applications I use didn't have any problems.

Thank you guys so much.