I'm pretty sure it's got nothing to do with the movie or the show. It's a fan film; it even says "Edit by..." something or other at the end of the video. Honestly, it looks more like a promotion for his InStone supplement line than anything.
All that being said, the video is fucking badass. Reminds me of the training montages from the movies, namely the one from Rocky IV. Seeing Rock and Drago go balls to the wall with their training jacks me up every time. I hope VI returns the series to its roots.
I wonder if T-mag would ever be interested in doing an interview/article with Stallone about his training/supplement ideas, how he got started in all of it, etc...I know he has a book, "Sly Moves", but I still think an interview would be cool. Somehow I doubt it will happen, because they have competing supplement lines, but damn that'd be cool.