KVCD: Audio not in sync?
 

is there a way that i could correct the audio in my film...it is app. 1/2 second too early compare to the video...i made a kvcdx3...

thx

big

Hi big,

If you can find the exact delay, and if it's consistent throughout the movie, you can remux your audio and video with BBMpeg and use the "Startup delay (ms)". The default values are 344ms for both video and audio, so calculate the delay you have to add to your video to get it back in sync with the audio stream.

-kwag

calculate
 

is there a way to calculate this???

I've never needed to do it, but the way I would do it is load the MPEG file in Virtualdub, and look for a scene where a sharp noise is heard. A closing door, a very clear lip sync, etc. Better yet, a scene change where the sound obviously changes. Now take note of the video time at that position, and then note the audio time. Do that by moving frame by frame until you get to that position. Then do the same for audio. Do the math and convert the difference to milliseconds. Thats the offset you have to add or subtract in BBMpeg, and remux your files :)

-kwag

if the movie was ripped from dvd maybe reading the log,
something like this:
Sub 0x81 packets = 147617, total bytes = 298184324 (delay -0:00:00.067)

:arrow: audio delay -67

adjust this value in headac3he!