Supplemental enhancement information for multi-layer video streams

An apparatus for processing visual media data comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to:

• perform a conversion between visual media data and a bitstream of the visual media data including multiple layers according to a format rule;
• wherein the format rule specifies that a supplemental enhancement information (SEI) message is included in the bitstream to indicate that it is allowed for a decoder to decode 1) a dependent random access point (DRAP) picture in a layer associated with the SEI message and 2) pictures included in a same layer as a layer to which the DRAP picture belongs, and following the DRAP picture in a decoding order and an output order, without having to decode other pictures in the same layer except for an intra random access point (IRAP) picture associated with the DRAP picture.

A non-transitory computer-readable storage medium storing instructions that cause a processor to:

• perform a conversion between visual media data and a bitstream of the visual media data including multiple layers according to a format rule;
• wherein the format rule specifies that a supplemental enhancement information (SEI) message is included in the bitstream to indicate that it is allowed for a decoder to decode 1) a dependent random access point (DRAP) picture in a layer associated with the SEI message and 2) pictures included in a same layer as a layer to which the DRAP picture belongs, and following the DRAP picture in a decoding order and an output order, without having to decode other pictures in the same layer except for an intra random access point (IRAP) picture associated with the DRAP picture.

A non-transitory computer-readable recording medium storing a bitstream of a visual media data which is generated by a method performed by a visual media data processing apparatus, wherein the method comprises:

• determining that a supplemental enhancement information (SEI) message is included in the bitstream to indicate that it is allowed for a decoder to decode 1) a dependent random access point (DRAP) picture in a layer associated with the SEI message and 2) pictures included in a same layer as a layer to which the DRAP picture belongs, and following the DRAP picture in a decoding order and an output order, without having to decode other pictures in the same layer except for an intra random access point (IRAP) picture associated with the DRAP picture.;
• and
• generating the bitstream based on the determining.