captured audio and video are desynced

[muffinman123]

video source: gaming console through composite AV cable
capture card: EasyCap DC60, only supports 4:3 aspect
system: cpu 330 @ 1.66ghz with 2 gb ram
program: virtualdub

the delay is constant, and virtualdub didn't ignore or insert more than 10 frames in 30fps 2 minutes long video. video always faster than audio

it's weird, when I record the first set of my video, the sound is in sync with the video, but few days later when I try to record again, my video is now always faster than my audio. I tried capturing with no compression vs Huffyuv compression and the sound is still not in sync.

I was using using ulead video studio that came with capture card but then I switched to virtualdub. I tried switching back to see if the problem lies in the software, but now even old ulead studio gives the same lag.

I tried going online searching for a solution, and it says that sound and video capture are processed by different process. So if I use 3.5mm Male to 2 RCA Female and get signal from "line in" I could get less latency. but problem persists.

I do not want to correct the delay post-capturing because I have 50-something of 2 minutes long video and it's too much work to correct them all one by one.

my virtualdub settings
video
-preview
-no filter chain
-custom format 640 x 480 24bit rgb
-everything else default

audio
-raw capture format 44.1 khz stereo
-no playback
-everything else default

capture
-timing options are default

when I enable audio playback, I can easily notice the audio video lag even when not recording anything. but because my system is pretty weak I always disable playback during recording. I also closed all my programs and disconnect internet to free up as much memory and processor power as possible.

I was going to post this on easycap and ezcap forum but there were no activity since last year.

[muffinman123]

alright found my problem. in capture timing options, Correct video timing for fewer frame drops/inserts cause my video and audio to desync. once I uncheck this all my recording on in sync now.