The recorder output is being messed with as part of an A/B test that should be active as of the latest client version.
“It’s the Windows video recorder, for the test some Windows users have a new .mp4 recorder rather than the old .wmv recorder.”
Tweet from TheGamer101
The new MP4 is an improvement, it’s now 720p instead of 480p and the frame rate is approximately 30 instead of 20! Definitely better than wmv format!!
I still wish the cursor would show up in the videos with Roblox recorder like it did a long time ago!
This is a big improvement, though I’ve hoped for the recorder to record videos in full native resolution (or at least 1080p) and also at 60FPS. I hope we can get that next. It would also be awesome if we can get customization options and the ability to select the place or folder to store video recordings at.
a bug with the new mp4 recorder is that some sounds doesnt get played/is quiet in some games for some reason when reviewing your footage