HLS #EXT-X-CUE-OUT, #EXT-X-CUE-OUT-CONT and #EXT-X-CUE-IN tags are surfaced with this type.
All custom, i.e. unknown/unsupported HLS tags are surfaced with this type.
HLS #EXT-X-DATERANGE tags are surfaced with this type.
EMSG data from MP4 container formats are surfaced with this type. See MetadataType.ID3 for the MPEG-2 TS equivalent.
DASH EventStream events (also known as MPD Events) are surfaced with this type.
ID3 tags from MPEG-2 Transport Stream container formats are surfaced with this type.
HLS #EXT-X-SCTE35 tags are surfaced with this type.
Used for custom messages between the sender and the remote receiver, such as a Chromecast receiver app.