No sound plays with the UE 4 intro movie

I wonder if it is because of this conversion that it’s unable to read the audio correctly. This is not an area I’ve had much experience with, but maybe try outputting the video directly into a .mp4 if at all possible?

I’d also suggest making sure that there isn’t a Boolean somewhere on the videos settings that enables or disables sound. You’ve probably already checked that, but just in case.

I have a feeling its the conversion process nuking your audio from the video though to be completely honest.