I have a model 3, software version 2020.20.12. My saved dashcam videos are sporadically unplayable or partially unplayable. This happens on the tesla reader where I get a message "video unavailable, please select different footage". But it's not just the reader. When I try to play them on my computer, the files are corrupt. Sometimes I get a valid 10 minutes of video. Sometimes just the first minute or so is valid. And sometimes the entire (saved) 10 minutes are bad.