MP4 video playback lagging behind its soundtrack


I have created a module in Storyline 2 and it contains a MP4 video (with sound) on the opening slide. Now when I publish it, the video playback isn't synced to its own soundtrack. The audio lags by about 3 or 4 seconds.

The video plays fine with no lag when I preview the project within SL and also in windows media player. Has anyone come across something similar or got any ideas to resolve it?

3 Replies
Alistair Bruce

I think I have solved the problem in a round about way.

First I tried separating the sound track from the video using video editing software but this still didn't solve the problem of the video playing slow.

What I found to work was convert the original MP4 video clip to an AVI file (using video editing software) and then inserting it into SL2