I have numerous videos stored but the Samsung Video app says I have zero videos. I have tried clearing the video apps cache and its data but still shows no videos. They are still in the same folder on both my internal and external storage as they were on Android 9
I think a similar problem has already been mentioned on German Beta Community.
As a temporary solution, it should be possible to see videos in "Camera" folder.
But it would still be best if you could report that via Beta Feedback option in Samsung Members app.