"Is it possible to get Firefox to display HEVC videos? Everything I have read indicates the Mozilla developers have some religious war thing going on with MPEG-LA and refuse to put support into Firefox for it -"
HEVC isn't supported in Firefox because it's no a license-free codec. Some people might color that as a "religious war", but those people don't understand the foundational principles and underpinning values and social contracts of Linux, Open Source and the Mozilla Foundation.
