Behind the Mask: The Batman Dead End Story (2015)
The movie is about Sandy Collora and his movies including the one short about Batman. Seems he was hard to work with so he had to make his own.
Bonus star for being about real life puts this at 3 stars. I’d rather watched the Batman short.
Check Out Behind the Mask: The Batman Dead End Story on Hulu.
( http://www.hulu.com/watch/816119 )