Synch a 2.0 and a 5.1?

[Nelson37]

I have an MPG with in-synch MP2 stereo audio, with a matching 5.1 AC-3 file. However, the AC-3 is off by several seconds.

I have synched wave files by visually matching the waveform display in Goldwave or similar, easy to simply move one file on the timeline to match the other, then add silence to the beginning. Anyone know of a prog which will display visual waveform for a 2-channel MP2 and a 5.1 AC-3, and allow moving on a timeline?

Alternate would be to play both files simultaneously on a timeline and bump one file's start time until they overlap.

These methods seem easier to me and more accurate than visually matching with the video. And the one file gives me an accurate measuring point.

Just had a thought, would the displayed waveforms be similar enough to allow for visual matching? Extracting a Wave file for each is another alternate plan, but which channels of the 5.1 should match the 2 channels of the MP2?

This is probably a job for Vegas, I just installed it but have yet to fire it up. Other projects done, which is what got me to this point. Time for another learning curve.

[Nelson37]

Looks like extracting a wav is the only way to get both waveform and audio playback. Zooming on the timeline and waveform view allowed for pretty precise matching.

No waveform on the AC3 file, and no playback, either. Probably an option somewhere but without the waveform display it doesn't matter.