When I import videos into Lightroom (either in lightroom mobile app or regular computer import) the iPhone 6 videos are always 4 hours off from their actual recording time. The photos taken around the same time and imported at the same time always have the right time stamp on them. Its very annoying is there anyways to fix this that is not manual changing the time on ma the video files?
I have noticed the same thing but in my case the video capture times are +7 hours off. I'm on the west coast of Canada so I'm guessing you are on an eastern North American time zone. I am running Lr CC 2015 but not the latest one released yesterday. The same thing happens with my camera videos as well as the iPhone videos. Capture times on photos are correct.
This is caused by a poorly defined QuickTime standard from Apple and LR's policy for handling time zones. See this bug report in the official Adobe feedback forum: iPhone Video Capture Time is Shifted Upon Import to Lightroom. Please add your vote and opinion to make it more likely Adobe will prioritize a fix. If you reply or follow that report, you'll be notified of any fixes and workarounds.