Just in case Clipwrap is part of the blame, I am posting about a problem I am having getting my Canon HF11 files into Lightroom 4. I have been rewrapping my camcorder's files from mts to mov for quite a while now so that they would import into Lightroom 3. That worked fine. But now that Lightroom 4 supports more video types, it ironically won't import files made by Clipwrap.

More details in this Adobe thread:
Adobe Forums: Video support (http://forums.adobe.com/thread/1032439)

Thanks for the heads up - I don't think we've got a copy of LR4 around yet, so I'll take a look.

-Colin