H264 has the advantage of very widespread decoding hardware. H265 is getting there, but in the meantime you'd be killing a lot of batteries with software decod

H264 has the advantage of very widespread decoding hardware. H265 is getting there, but in the meantime you'd be killing a lot of batteries with software decoding. This page claims 78% supported on iOS and 57% on Android as of last August: https://www.scientiamobile.com/growing-support-of-hevc-or-h-265-video-on-mobile-devices/ https://www.scientiamobile.com/growing-support-of-hevc-or-h-...