I have looked into this a bit more, especially about SD cards. Now, the appliances regarding the situation are
- Drone (brand new)
- Canon camera (at least 10 years old)
- Laptop (at least 10 years old)
- Android phone (new).
So, I bought a new Sandisc, class 10, 16GB SD card and plugged it into the drone. Took the Drone for a flight and took some video. Then plugged the card into the camera. Then connected the camera to the laptop. No footage.
Bought a second new Sandisc SD card (same class as above). Plugged it into the drone, went for a flight and took some video. This time I then plugged the card into the phone. I got some footage!
I then tried the same card in the camera and directly into the laptop. The camera gave a card error message, the laptop said the card required formatting but would not allow formatting (in any of the format systems). I them put the same card back in the phone and it now appears to be corrupted. The phone will now not permit the footage to be played and says the card requires formatting but will not format beyond 20%.
Having looked at various Youtube videos, I have come to the conclusion (I am no techie) that both the laptop and camera are too old to recognise the new SD cards and have possibly corrupted them so that the phone cant play them or, it appears, format them. Where do I go from here? Very grateful for any thoughts?