.ftyp

MP4 File Type Atom

Not a file (scheme/atom)

Format facts

MIME type: application/x-mp4-ftyp
Apple UTI: custom
Stock Quick Look: no stock preview
Planned approach (census): not-a-file
Icon hint: generic-icon
Prevalence: rare

Renderer note (from the census)

parse ftyp atom for major brand and compatibility

Gotchas: format identification