importing from iPad mini 2 to PC

Hello

I have been transferring original pictures and videos from my iPad mini 2 to PC (windows 10) with windows default tool . Here I have some questions.

1. I tried to transfer the same photos to the PC again, they gave different checksums, after I removed their EXIF, they gave the same checksum, which should make sense.

However, I cannot remove EXIF from videos, they always give different checksums for the same video on different imports. Where is their difference?

2. As far as I know,...

importing from iPad mini 2 to PC

importing from iPad mini 2 to PC