Exported videos do not work in any other software

When exporting .mp4 videos, the files are exporting a 0 seconds and also unable to load in most video players and other editing software such as lightroom, Hitfilm etc.

Is there recommended settings for generic .mp4 exports?
What is the difference between h264 high, h265 main etc. And which is best for .mp4 exports

I disabled enhancement option and the export works normally.
Possibly something in that option corrupting the export?

Wait, is it working when you disable enhancement? I tried that a few versions ago and it did not work.

Would be very weird if this is true. May have just been a fluke that it worked/didn’t work. I mean, from the file writer routines, it should all just be a matter of writing data, right? (However it’s obtained)