Possible to end embeded video on last frame?

For HTML video, see this post for how to move or hold the playhead to the end time of the video.

Something like this: https://jsfiddle.net/xjnao5gw/

See also this for HTML video controls: https://www.w3schools.com/tags/ref_av_dom.asp

SL already seems to do this for videos embedded from the content library. For embeded custom players like YouTube or others, that would be a function of the specific player. For a simple solution, you also could watch for the end of the media (again, may be player specific) and then show a static image over the video on your slide if it can't be done otherwise.

For YouTube, you could see this post regarding sensing the end of the video:

Enable Next button upon completion of Youtube video | Articulate - Community