This thread has some good information and I've used this program with some VERY good success over the last couple of years.
App to fix corrupted Video Files (new one)
App to fix corrupted Video Files (new one)
Make sure that is SDXC I and that is Class 10 U3. Although U1 do work for video, you are cutting it close. I think the drones records at 12.5 Mb/s and U1 writes around 18Mb/s.Well, that's not good. Hard to believe that the latest model Phantom would not utilize the latest card technology. Those cards are made for video. Checking in with DJI now.
Sadly you are correct. I cancelled that order and bought new Lexar 633x UHS-1 cards and saved some money, too.
Well, this sure is a learning curve.! OK I've now found the 64GB UHS-1 U3 600x Sandisk at my dealer, Samy's. They are slowly seeing less Lexars as Lexar is ramping down their production. So I went with SanDisk. They seem to have an equally good rep.
The good thing about charts like this one is they show write speed which if often not advertised by manufacturers. Manufactures normally promote read speeds.
Many programs will recover pictures from formatted cards- should try one of those!