Appends a standalone music marker paragraph.
Any interim tail is dropped: captions stop during music, so unfinalized words would otherwise sit on screen until singing ends.
Listener transcript.
Marker id, localized marker text, and timestamp.
Updated transcript, unchanged when a marker is already showing.
Appends a standalone music marker paragraph.
Any interim tail is dropped: captions stop during music, so unfinalized words would otherwise sit on screen until singing ends.