Need good free HTML5 video player for integrating video ads and Vimeo videos
I'd suggest you looking at the built-in HTML5 outstream video player AdPlayer.Pro. 
You can use this video ad player and host your video on AdPlayer.Pro platform or you can use HTML5 player separately. It's compliant with all major video advertising standards, like VAST/VPAID and Google IMA. Also I like the UI and additional tracking tool, which provides watch time, click rate, estimated revenue etc.