RESOLUTION is defined as a decimal-resolution, which is defined in https://datatracker.ietf.org/doc/html/rfc8216#section-4.2 as two decimal-integers seperated by an x.

So my understanding is that floating point values in RESOLUTION are not legal.

That does not mean that there aren't playlists around that include floating point resolutions of course ...

I understand the approach here @daveisfera, reaching more and diverse formtas/playlists, but I'm with @davemevans here.
IPTV and pirate content have some very weird definition set (some nonsense datatypes/values). Welcoming these differences might be a good idea in theory, but in practice it could make m3u8 a simple key/value parser.

The main/most used video codec seems to use an unsigned integer to represent width, #356 (comment)

RESOLUTION is defined as a decimal-resolution, which is defined in https://datatracker.ietf.org/doc/html/rfc8216#section-4.2 as two decimal-integers seperated by an x.

That definitely does mean that having .0 on RESOLUTION makes it out of spec, so I'm ok with rejecting this