That's alot of work. I would still just rather use compressor with or without QTpro. But good breakdown of the issue. I think that is only one instance of this issue, as it seem to be related to each device trying to use the minimal most resources to get video captured at high quality. ... View more

MXSw, Thanks for the s/o!  I'm glad that helped you. It took me a month to get that solution. Lol. And you right. Not everyone wants to buy QuickTime, but it's a necessary  investment. ... View more

I normally don't post on boards, but I've had a similar issue to the rest of you and I just found a solution. Here is my quick description and solution. My client shoots all their videos using apps like Periscope, Snapchat etc.  And if you import of any of these videos from an app that are .mp4 they will go out of sync past 5 mins. Someone stated this, and it is correct.  Because the iPhone keeps resetting to shoot in the best environment, it changes every start and stop. I'm assuming the phones uses VBR to save on resources.  I tried Handbrake and it doesn't work on a Snapchat video, because the video has too man breaks. It's literally like a bunch of many videos stitched together. So you know the VBR is going crazy.   I edit on a mac and converting the mp4 using Quicktime pro didn't work either.  My friend that edits using Final Cut Pro didn't have an issue using the videos I converted using QT pro, but when i put the .mov into Premiere of course the sync issue was still there.   Someone mention making the VBR video into CBR. That sounds great in theory but when the #1 go to solution, Handbrake, doesn't work then what do you do?!  I use to use FCP religiously until Apple made it into iMovie Pro.  When I used FCP, I used it always with Compressor because I was the batch video king. So that's what I finally did here. I took the SnapChat video and encoded it with Compressor using a custom QuickTime export setting (H.264, 720p, data rate: 10,000kbps, and 29.97fps). When I imported the SnapChat video it worked. No sync issue!  I told that long story to cover most of the stuff that was stated above, because it didn't work for me. Summary of my solution: Re-encoded your video with Compressor using a custom QuickTime export setting (H.264, 720p, data rate: 10,000kbps, and 29.97fps) Yes, it does suck to have to use another tool to accomplish a task. And yes it is an Apple made product. But so is the iPhone, so it kind of makes since. And it beats me buying FCP.  If there are typos in this reply, forgive me. I have to get back to work now. LOL. ... View more