Opera Oi n context menu "Open with" of files .mp4

[proshor]

proshor last edited by leocg

Dear specialists! Opera begins reaching in the context menu "Open with" of files .mp4. Please, explain, how to delete an extra item. Never been there before.

[proshor]

proshor last edited by proshor

Thank you! The problem is solved!
https://remontka.pro/open-with-menu-windows/
How to prevent it's appearance in future? Are there any browser settins not to allow the program to add it's keys in the register?
Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\mp4\OpenWithList