Plural Eyes and Audio/Video Time-matching

[cybrmarc]

Hi,
I just spent 2 months synchronizing video with an external source, using chopping the audio and delaying it with Media Player Classic. Extremely tedious.

I got PluralEyes, an auto-synching software for this, and attempted to use it - only to have it not work. Instead of matching up the A/V tracks, it either completely separates the two tracks, or just puts them right next to each other to start at the same time (0).

One thing I noticed while manually synching my audio and video, was that it seemed the speed of each varied. One some of the synchs, I had to cut the video clip in half, or thirds, because partway through the audio or video would be faster than the other. How does this happen (low battery, etc?)

There's another piece of software called WooSync by Wooware, that is supposedly more effective than PluralEyes, but I'm reluctant to shell out more cash when I'm not sure if my source material is even realistic to work with, beyond the manual tedium that I already know is possible.

Does anyone have any experience with different-speed video/audio like this?
Thanks
Adjul

 

[TerryMathews]

It's much easier to sync audio than video. Two loud sounds at the top, separated by some time like a minute. Match off your first sound and your 0:00:00 mark. Match the second sound and you've got your conversion rate (59.96/60.00).

This is easy to do in Premier, I'm afraid I don't know how to do it in other tools.

 

[jaedaliu]

is the audio always faster? is the recording performed with a consumer device? or is it being streamed and saved to a computer?

My guess is 1 of them is dropping frames.