MP4 videos not showing metadata updates in properties

Hi, I have created metadata for MP4 videos but they don't appear in the properties and no update is showing. I've done matadata for photos with IPTC Core without it being an issue but it doesnt seem to work for videos. I have been running tests both using the IPTC Core and the Video parts, still nothing updates itself in the properties. 

I am running out of ideas, anyone knows how to fix this issue?