Non apple devices are also fine with h264. AFAIK it’s the video codec with the most support and what I would pick if I’m going to be throwing the one same file at every device.
Most linux distros do not support it by default. I would encode in both h264 and vp9 which would cover everything and the browser should be able to pick the file it supports.
I didn't have them installed for years and found almost everything still worked. I think the only website that didn't was twitter which I don't really use.
