I have a bunch of files who's names were altered by an android gallery app without any extensions.
If I manually rename to add an extension they work fine so not encrypted.
Problem is they are a long string of HEX charactors.
I had no problem adding the extension but cannot seem to find a means to rename all files to just a series of numbers. 1.mp4, 2.mp4..5.mp4,..so on.
Ideas