Vidupe is a program that can find duplicate and similar video files. V1.211 released on 2019-09-18, Windows exe here:
Vidupe 1.211 (released 2019-09-18) changelog:
Vidupe 1.21 (released 2019-09-13) changelog:
Vidupe 1.2 (released 2019-05-27) changelog:
Vidupe 1.1 (released 2019-05-05) changelog:
1.0 release