First time I've seen this, came back in from flying and had one of the movie files labeled this way - and it will not open in any player. Just curious, anyone seen this before? Any idea what happened? Clearly the DJI app itself noted corruption (or something) happened and marked it as such. The card file system itself is intact and went through a scan without issue. Now - CAN'T write off the potential coincidence (or cause?) of something else: I flew two sessions that day on that card, which started empty. The first session produced that file. I didn't check after that session to see if _bad existed - so it MAY or MAY NOT have already been there before session two. Flew later that day and MIDFLIGHT I suddenly noticed that movie recording turned off and I get a NO SD CARD message. I bring her back to me and, sure enough, the memory card is just barely popped out of the slot. I push it back in and all is well again. I cannot say if the _bad occurred before the NO SD CARD or not. The coincidence is hard to ignore though, as I've never had this happen before. Then again, also never had the SD Card pop out on it's own during flight.