I was filming in 4K 30fps and everything looked fine from my phone screen. I was able to watch the video on my phone and it seemed fine. When I played it on the computer after downloading it from the SD card, it always froze at the exact same frame and the rest of the video was just that still image. I have filmed a lot in this resolution and have never had this problem. There was also something wierd that happened in the last few seconds of another video. I will include a picture of my SD card (which I haven't had any trouble with until now) and a video of the end of the video that looks messed up (not the one that froze).