Server Version#: 4.66.1
Player Version#: 4.66.1
Using latest (at time of post) Safari and macOS on M1 Mac, for the very same video, sometimes Safari is choosing h.264. This causes transcoding on the server, and sometimes some stuttering.
h.265 is listed as supported in Safari 15.x, so I’m not clear why it’s working sometimes and not others, for the very same source material.