: Specialized tools for inspecting the "atoms" or "boxes" (internal structural blocks) of an MP4 file.
: Provides a highly detailed tree view of all container and stream information.
: The most comprehensive tool for reading EXIF and XMP metadata from video headers.
For a "deeper" report that includes camera settings, GPS coordinates, or original timestamps:
: A command-line tool (part of FFmpeg) that displays the internal stream structure and metadata tags.
Why aren't file properties shown for MP4 files? - Ask Ubuntu