Failed Attempt to view MPEG4

I wanted to test my Connect’s video abiity and went to the Internet Archive list of science fiction movies

Scrolled to the bottom of the page and “Save link As” to download one of the MPEG4 vesions. It saved as type MPEG4 Audio File. Well. I copied it to the Connect’s Photo & Video Library and ran it.

What I got was a video with no audio with our without phones.

What gives?

There are several existing threads that discuss the supported video formats on the Connect, including this one:

Not all MPEG4s will work, they need to have the proper video and audio attributes.