Play flash content in QuickTime player It possible play web video content like a Flash or HTML5 file in external player like a QuickTime player or VLC player. 

Play video like it made in iphone when using safari.
Some time ago I used the "Elmedia Player" for playing old flash movies I had on my disk. Don't know how it works nowadays, but they have a free version to try.

http://mac.eltima.com/media-player.html