Error maybe importing MPEG1

[rrrcabral]

I'm trying to gather different videos from an old show from 2005 (this one: https://archive.org/details/weezer-live-in-curitiba-rock-festival-brazil-09-24-2005-bootleg ), to edit it. them together to become a single concise show instead of separate videos, but the files are MPEG1,
and it's giving this error:

(Additionally, to shorten the time I am dragging the entire folders into the program, but the folders also have some photo files, but I believe that this is not the error, the program would simply ignore files that are not video or audio.)

EDIT: after try to drag files one by one, no erros occurred in mpeg1 files.
maybe is because of the previous .jpg files together in entire folder drag. (or not?)