If I stop a video and return to the item page, it won't play again unless I refresh the page:
Emby Safari Problem.mp4
I don't run 4.7 but it's a problem in 4.8.0.21 beta so if it has the same fix it isn't working.
And video playback still stops abruptly.
I haven't noticed any change in Safari compatibility since the August? release that fixed HEVC playback.