Save local video files to iTunes/iCloud Backup

Helloo

I transfer my videos (50GB) via iTunes file sharing to Infuse app. when I do iTunes full backup (encrypt) and restore it later on same iOS device.

Then all the videos are gone. it seems to be a bug. no? where I can activate a option, where all my videos are saved to the iTunes backup?

why is that? can’t you change it?

I am not sure that is a bug as I do not think iTunes backs up media files. If you think they should be backed up then you need to raise this with Apple.