I have a music video I downloaded and the audio quality is not very good. I want to convert it to VCD and I have the Mp3 song of the video in better quality. I would like to use this instead of the audio that came with it. I know how to use TMPGEnc to do this its just I need to be able to work our the difference with the timing of the video/audio to get it in sync.

I know I could guess but I wondered if there was a program that would allow to to run the video and audio separately so I could get them to sync up and give me a time difference?

Any help would be appreciated