How to sync audio automatically

[andrecaldas]

I have written an MLT program that calculates the alignment for you. It can also determine if there is a drift between the audios and fix that two.

The program tells you how to adjust the audio’s speed and how many frames (or seconds) of difference there is between two tracks. Both tracks can be AV tracks.

I wrote it as a first step into getting the functionality implemented in Shotcut. See this post:

Audio Alignment Implementation

This is not a suggestion of some feature. I plan to implement a functionality that is already on the Road Map. But I would like to discuss, document and, if possible, get support from volunteers. I am not really familiar with MLT and Shotcut terminologies. Feel free to correct things (this post is a wiki). The “MLT only” part has been accomplished. All we need now is to integrate it in Shotcut. I (André) plan to wait until the next release because people are busy with beta tests, right now. Th…