German alphabet letters aren't supported in text file

[janot]

e.g. letter ü in Kostümtag.mp4

[+] Processing file: C:\Users\a\Desktop\Kostümtag.mp4 [*] Error: C:\Users\a\Desktop\Kostümtag.mp4 does not exist -> continue DONE!

[absadiki]

@janot, filenames should be Unicode strings