Saving metadata to file "grayed out" for all of my video files (mov mp4 )

This is the first time in my Lightroom history that I've worked with video files, I was hoping that somebody might be able to help me figure out why I can’t save metadata to any video format.

Command + s doesn’t nor does Metadata / Save Metadata to File (which is grayed out). The files were created with Photoshop / Premiere Pro / iOS and is the case with any video format.

I would appreciate any advice or guidance on how I might be able to solve this problem. Thanks in advance - CES.