ok, now im getting frusterated....

[Syndrome]

Seems to me that I am the ONLY ONE having a major problem here... this is my last try for help, no one seems able to help me.

I record a Movie through my video in card in an uncompressed mpeg-1 file. (about 2 gig per hour). I then use virtualdub to extract the audio. (i already checked to make sure that the bitrate i record in is the same as what i am encoding to)

I then try to encode the movie, and success using seperate audio and video files! (i tried with just the mpeg-1 and i get major audio sync probs), I then look at it on my computer and for about the first 10 minutes, its perfection. After that, the audio slowly gets ahead of the video, as much as half a second or so. Enough that its completely noticeable. So i cant use the audio correction, because its not the same throughout the movie.

Now, i recorded in 29.97 bitrate, would it fix my problem if i encoded in 30 bitrate? so that the video might be able to keep up with the audio? do you have any other suggestions to try? I have tried everything i can think of, and I seem to be the only person having this problem. I AM SO FRUSTERATED!!!! i have spent weeks trying to fix this problem now...

Thanks for your time
Syndrome

[Smells_Like_Feet]

Hi Syndrome,

You seem to be somewhat cofused in your termanology.

I record a Movie through my video in card in an uncompressed mpeg-1 file. (about 2 gig per hour).

mpeg-1 IS a compression format. I have not done any capture in this format but from what I have read it is common to have audio synch issues.

I then use virtualdub to extract the audio. (i already checked to make sure that the bitrate i record in is the same as what i am encoding to)

I do not know what format you are trying to end up with (X/VCD, X/SVCD, or DVD) but since you are refering to mpeg-1 I'll assume VCD. If this is the case I don't see any reason to reencode your original capture (if you are truly using mpeg-1 to capture.

I then try to encode the movie, and success using seperate audio and video files! (i tried with just the mpeg-1 and i get major audio sync probs), I then look at it on my computer and for about the first 10 minutes, its perfection. After that, the audio slowly gets ahead of the video, as much as half a second or so. Enough that its completely noticeable. So i cant use the audio correction, because its not the same throughout the movie.

If your original file is perfect for the first 10 minutes and then drifts out of synch, reencoding is not the answer. In fact I do not know the answer.

Now, i recorded in 29.97 bitrate, would it fix my problem if i encoded in 30 bitrate? so that the video might be able to keep up with the audio? do you have any other suggestions to try?

What you are referring to here is framerate. A bitrate of 29.97 or 30 would be terribly poor quality . I do not believe that adjusting your framerate will fix your synch issues (and could lead to other problems ). I think that additional information is required:

- Are you truly capturing to mpeg-1 (what is the extension on the file mpg, avi???)
- What kind of hardware are you using (capture card, firewire, dazzle, sound card???)
- What format do you want to end up with (divx, VCD, SVCD, XVCD, XSVCD, DVD, etc)


Sorry that I cannot fix your problem, but if you could follow up with a bit more information prehaps I (or one of the real experts out there) can help you out.

-Smells_Like_Feet

[Dutch Coder]

I would like to help too.....but "Smells like Feet"is right; try to give the right information; about what you have/ want to do! Also specify about the programms you use.
D.C. 8)