Quicktime Invalid Movie Atom JVC GY-HD250

Hello-

I am shooting on a JVC GY-HD250 camera, 1280x720 QuickTime format. When I updated Quicktime versions, the files say "invalid movie atom"and cannot be viewed in Quicktime Player, or imported to FCP.

They can however be viewed in VLC.

I am currently using a work-around, where I use Quicktime version 7.5.5 to import, and then switch to 7.7.0 to export, but this process is less than perfect and I need to find a solution to this issue.

Any feedback would be helpful.