Torrent Source
http://apkmaza.net/lua-cast-online-video-popup/

Lua Cast

Pop-out and floating your video over any other apps allows you to watch a video and send text messages, emails or browse the Internet without any inconvenience.

Just tell LuaCast what you like, it can play Dailymotion, YouTube and Vimeo videos in a pop up screen. This supports “Real multi-tasking” with “Picture in Picture” mode. Why you have to close a video when you get any notifications or get bothered from friend’s messages?