Slowing down an mp4 file

This is probably a silly question, but is there a way to slow down an mp4 file?

A co-worker recorded a 3 hour Zoom meeting, and when the file downloaded the file compressed down to about a 25 minute runtime. The entire meeting is there, but everything is super sped-up, both audio and video. It honestly reminds me of the fast forward scene in Spaceballs.

I have opened the file in Windows Media Player but the playback speed control doesn't let me slow it down.

Is there anything I can do to slow it down and at least save an audible, normal speed audio file?