Thanks, good suggestions all, especially the caution for the SD card.Where are these photos stored? On a PC I put photos from a drone in a folder given the name of the drone. There are programs such as "bulk rename utility" with which you can rename files en-masse on a windows PC.
Be wary of changing names on a memory card to non original layouts, I think I have seen at least one thread sayong it caused problems with a drone and I recollect it causing problems on a DSLR. e.g. changing IMG_0123 to House_IMG_0123