I have the same issue with video not importing, basically stalled. Wish there was a solution somewhere.
i have the same problem with LR CC.
and i don´t expect that adobe will ever fix these issues.
they can add VIDEO SUPPORT to their feature list that is all they care about.
if it actually works.. who cares .. sure nobody at adobe.
since adobe as "support" for videos i have issues with it.
common formats won´t be recognized.
LR CC is just stalling when importing videos.... it´s a sad joke.
there is no error message or anything.. it´s just stalling.
I did not have this problem with Lightroom 5. I have it with 6.
Same issue. Videos wont import or play in Lightroom 6. Is it possible to report this to Adobe at all? Seems to be a problem since I'm not alone here...