Cast not working when mirroring the screen

I use the Screen cast (screen mirroring) option on my OnePlus 7t pro and then play videos through VLC. Since a few days, when I play the video after mirroring the screen, I see the Cast remote icon on the TV, same as the screen but the audio plays.

Updated VLC to the latest version, but doesn't help.

Using chromecast for the same btw and phone on Android 10.