The Highslide JW Player™ makes it possible to add FLV, H.264/MPEG-4, content to your site and open in a lightbox style window.
Highslide Multi Youtube displays and plays muti youtube videos from a single highslide gallery. Please read the PDF for how to insert the youtube urls correctly.
This extension adds a playlist to the standard HTML5 video player.
Plyr is a simple, responsive, lightweight and accessible HTML5 media player by Sam Potts: https://plyr.io/
Unlike the standard HTML5 media player, Plyr has the same look on all browsers and devices. The extension supports audio and video.