As far as I can remember, since I switched to Linux I use SimpleScreenRecorder to record my computer screen. I keep using it, but because I choose the KDE desktop and it still uses X11 by default and knowing that in the future, if SSR does not add support for Wayland, I will have to look at other alternatives. One of them launched this week a major update, a Kooha 2.0.0 that introduces changes of those that it is not understood that they were not from the beginning.
The first thing they mention in their News list is that the MP4 and GIF formats have been added. That we could not export a video to GIF was not an important deficiency, but MP4 is very widespread and it did surprise a little more. To make up for the wait a bit, Kooha 2.0.0 has also improved bugs in GNOME 41, in addition to other changes such as the following.
What's new in Kooha 2.0.0
- MP4 and GIF formats have been added.
- The ability to record a single window or monitor has been added.
- Added optional hardware accelerated encoding.
- Added recording of multiple video sources.
- Added much improved error handling.
- Fixed broken UI in non-default close button placement.
- Fixed a major bug in GNOME 41.
- Correction out of the selection region in the integer scale.
- Fixed saving the recording in a hidden directory.
- Performance improvement.
- Now works for certain desktop environments and window managers.
- Complete rewrite to Rust.
- Updated translations.
From the above, the point in which he mentions that works for certain graphical environments and window managers. I haven't personally checked what you mean, but up to Kooha 2.0.0 only GNOME was supported. With this and other changes in mind, it looks like it's gearing up to become one of our favorite options for screen recording on Linux-based operating systems.