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§4.4

Application with mutiple dependent video tracks

An example is shown below for an H.264 video track with 2 spatial qualities at 360p and 720p each at 30 fps

Video Track 1
codec: "avc3.42E01E"
bitrate: 500000
framerate: 30
width: 640
height: 360

Video Track 2
codec: "svc1.56401F"
bitrate: 1000000
framerate: 30
width: 1280
height: 720

When ready for publishing, the mapping to the MOQT object model and to underlying QUIC, follows the same procedures as described in Section 4.2 for each video track.

When decoding at the 'End Consumer' for a given MOQT group, the objects must be fed in the GroupID then ObjectID order in the ascending quality track order.

For the example in the section, this would imply following pattern when decoding group 5.

Track 1 Group 5 Object 0
Track 2 Group 5 Object 0
Track 1 Group 5 Object 1
Track 2 Group 5 Object 1
....

This is one section of Low Overhead Media Container, rendered per-section for quick reference and citation. The authoritative text is draft-ietf-moq-loc-03 at the IETF.