There are obviously chemical-based processes for recording photos and video. They can be adapted for high temp. Balloons can be used to lift those records and o

There are obviously chemical-based processes for recording photos and video. They can be adapted for high temp. Balloons can be used to lift those records and other data high into the atmosphere, where temperatures are lower and they can be recovered and converted to electronic data by more conventional vehicles. It's very, very difficult, but not impossible.