Hello, I have a very weird issue with my S10.
I have many videos on my phone and each time when I share them with someone via any platforms (WhatsApp, Viber, Facebook, etc), those videos are getting automatically filtered.
It's a kind of gray film on it.
Cannot understand what's wrong with my videos.
I've tried to check my gallery and to upload it to google and before uploading them I saw that those videos are getting that filter.
i managed to remove the auto filtering.
1) go to camera
2) select "video" to take a video
3) select the "gear" options (left corner)
4) select "Advanced recording options"
5) deselect HDR+ video!!
I've got the same issue. I followed your steps and it still hasn't worked. When I send videos they state 'covering video' then sends on a dull grey filter. Can you help?