Track input map atoms
Atoms that define how data being sent to this track from its nonprimary sources is to be interpreted.
Overview
Track input map atoms define how data being sent to this track from its nonprimary sources is to be interpreted. Track references of type 'ssrc' define a track’s secondary data sources. These sources provide additional data that is to be used when processing the track. Track input map atoms have an atom type value of 'imap'.