I’m having a strange occurance doing a fan restoration where I’m editing from an H264 MP4 file in Premiere ripped from blu-ray. There’s a frame glitch that is not in the actual file when I play it through VLC. The glitch also appears when I export from Premiere.

I’m assuming it’s because it’s a compressed H264 MP4 file.

I’m running on a Mac. I’ve used MakeMKV to rip from blu-ray to create an MKV then I demux using MP4 tools and edit from the MP4 files.

Do I need to encode the file to an intermediate codec like Apple Pro Res to make it easier? Has anyone had this problem? Solution?