Save a copy of the original somewhere else, like the desktop in a separate folder, just in case. Rename the downloaded file to "BG_LoginVideo_01.bk2" Once you rename the file just place it into the movies folder.
You can also use it for heist loading screens if you copy it and change it to the loading screen name like "HeistBG_ArmoredTransport.bk2" Happy Heisting!
for everyone having trouble with adding this:
rename downloaded file to "BG_LoginVideo_01.bk2"
move original file with same name from Movies to safe place to make backup (for example into Desktop)
place renamed file in Movies
thank you so much
Thanks for adding this, gonna add it to the description to make it easier to see.