OUT OF SYNCH

I don't know why, but the latest episode of On the Track which we posted the other day has the soundtrack and pictures out of synch in the latter part of the episode. I suspect that it is something to do with YouTube, because a couple of other random interview videos that I watched yesterday are also out of synch. However, this morning - as a test - I looked at last month's video, and it seems to be OK, so I really don't know.


Suggestions please...