17 Orientation timed metadata in the 3GPP File Format

26.2443GPP3GPP file format (3GP)Release 17Transparent end-to-end Packet-switched Streaming Service (PSS)TS

WhenOrientation timed metadata is stored in the 3GPP File Fomat, a timed metadata track shall be used with OrientationSampleEntry box as described in clause 6.13. The presence of OrientationSampleEntry indicates that the metadata sample format are the fields of the Orientation Information box in Table 8.12d starting from the field Digital_zoom. Each metadata track containing Orientation data should reference the video track which it describes using the ‘cdsc’ track reference as defined in the ISO base media file format [7]

Annex A (normative):
MIME Type Registrations for 3GP files