I know the fix for an unplayable movie is to put the SD card back in, turn on, turn off and that closes the file.
I use Olympus software on the PC to copy all files since the last copy which copies all the new images and movies off my mini's SD card. It also copies the last file saved from the previous cut.
Checking the SD card files, whenever you turn on the mini, it closes the last movie and updates it's timestamp.
Maybe they found it easier to fix the (user) issue of not ending a movie before it shuts down by making sure it's closed on boot.
I use Olympus software on the PC to copy all files since the last copy which copies all the new images and movies off my mini's SD card. It also copies the last file saved from the previous cut.
Checking the SD card files, whenever you turn on the mini, it closes the last movie and updates it's timestamp.
Maybe they found it easier to fix the (user) issue of not ending a movie before it shuts down by making sure it's closed on boot.