If you are looking to create a video feature or utilize an MP4-related tool, you might be referring to one of the following standard features: Common Video File Features
(e.g., "I want to create a video with a specific style" or "I am trying to fix a corrupted file"). MM NWOmp4
Adding descriptive information (tags) like title, artist, and date to an MP4 file. If you are looking to create a video
Using modern MP4 extensions to include spatial audio features (similar to Dolby Atmos). MM NWOmp4