OptionaldescriptionID3 frame description (e.g. GEOB Anvatos for Anvato break-signaling cues), when surfaced.
OptionalendOptional end/active-until time, in seconds.
OptionalframesParsed ID3 text frames keyed by frame id (e.g. TXXX).
OptionalidMarker identifier (EXT-X-DATERANGE ID / emsg id).
Optionalmessageemsg message data, daterange client attribute, or the decoded (UTF-8) data of an ID3 GEOB frame.
OptionalmimeID3 GEOB MIME type (e.g. application/json), when surfaced.
OptionalphaseWhen the cue was delivered relative to startTime. parsed means the segment was
parsed before playback reached the cue; presented means the playhead reached it.
Omit this property when the adapter cannot distinguish the two. Marking an early
parsed cue as presented can cause an ad break to start before its scheduled time.
OptionalptsPlayer media time minus the stream's PTS clock, in seconds, when the adapter knows it
(DASH: Period@start - presentationTimeOffset / timescale). A DASH emsg whose
presentation_time_delta is 0 reports its carrying segment's start as startTime; with
this offset the core places an in-band break cue at its own pts instead.
OptionalrawUndecoded marker bytes (ID3/emsg), when available.
OptionalschemeScheme URI (EXT-X-DATERANGE scheme / emsg schemeIdUri).
Presentation time of the marker, in seconds.
Marker source type.
One in-stream timed-metadata marker (payload of
timedmetadata). Minimal, player-agnostic:id3: HLS ID3 — parsed textframesand/or undecodedrawbytes.daterange: HLSEXT-X-DATERANGE—id/schemeIdUri/messageData.emsg: DASH/CMAF event message —schemeIdUri/messageData.