Michael Bay has released a 10 minute video of raw filming of scenes as well as the crew behind the Age of Extinction Movie... which could well be the last thing we see released by Michael Bay for Transformers if he doesn't direct any future films.

Ten minutes is a decent sized clip, but with such a complex movie with so many stunts, it only scrapes the surface of the various filming and special effects techniques.
The source video is titled "Outtakes", but I didn't really see anything that looked to be an outtake (a blooper or error that was not used and was re-filmed). I'd probably call it a behind the scenes featurette.

It is interesting to watch, to see how different the raw video is to what ends up on screen (after post-production and digital effects).
.