ReadonlyreferenceIndicates the reference type. A value of 0 means the reference is to a media segment. A value of 1 indicates the reference is to a hint track segment.
ReadonlyreferencedThe size of the referenced segment in bytes.
ReadonlysapThe SAP delta time specifies the difference in time (in the timescale of the 'sidx' box) between the earliest presentation time of the segment and the first SAP within it. This allows players to quickly locate the SAP for efficient playback startup or seeking.
ReadonlysapThe SAP type indicates the type of stream access point that starts the segment. This is a 3-bit field. The SAP types are defined in ISO/IEC 14496-12, and they describe the characteristics of the stream access points.
ReadonlystartsIndicates if the segment starts with a SAP (Stream Access Point). If true, the segment starts with a SAP,
facilitating random access and efficient streaming.
ReadonlysubsegmentThe duration of the subsegment. This is expressed in the timescale provided in the 'sidx' box.
A single segment reference within a sidx box.