Sound problems importing video into Lightroom from Aperture
I'm moving from Aperture to Lightroom. I do not like how the LR import plugin for Aperture organizes content so I have exported content in batches and imported to LR. This is working fine for photos that I export as Original from Aperture and import into LR. I'm having problems with videos, most of which are .mov, .avi, and .mp4. Randomly as best I can tell, some video imported with sound and others did not. Even videos taken from the same original source/device. The problem seems most pronounced with .mov files, but many play sound fine so it doesn't seem like a missing codec... hard to imagine something as generic as .mov being a problem. Why are these videos without sound?