Recovery point SEI message in multi-layer video codecs

A device for video encoding multi-layer video data, the device comprising:

• a memory configured to store at least a portion of a multi-layer bitstream of video data;
• and
• one or more processors configured to:
• encode a first access unit comprising at least a first layer and a reference layer of the first layer;
• determine if the first access unit is a picture order count (POC) resetting access unit;
• determine if the first access unit comprises one or more pictures comprising signaled POC most significant bits (MSB) information;
• in response to the first access unit not being a POC resetting access unit and in response to the first access unit not comprising the one or more pictures comprising the POC MSB information, determine if the first access unit meets a condition;
• in response to the first access unit meeting the condition, include in the first access unit, a recovery point supplemental enhancement information (SEI) message that applies to at least the first layer and the reference layer of the first layer;
• and
• generate the first access unit with the recovery point SEI message.

A non-transitory computer readable storage medium storing instructions that when executed by one or more processors cause the one or more processor to:

• encode a first access unit comprising at least a first layer and a reference layer of the first layer;
• determine if the first access unit is a picture order count (POC) resetting access unit;
• determine if the first access unit comprises one or more pictures comprising signaled POC most significant bits (MSB) information;
• in response to the first access unit not being a POC resetting access unit and in response to the first access unit not comprising the one or more pictures comprising the POC MSB information, determine if the first access unit meets a condition;
• in response to the first access unit meeting the condition, include in the first access unit, a recovery point supplemental enhancement information (SEI) message that applies to at least the first layer and the reference layer of the first layer;
• and
• generate the first access unit with the recovery point SEI message.

An apparatus for encoding video data, the apparatus comprising:

• means for encoding a first access unit comprising at least a first layer and a reference layer of the first layer;
• means for determining if the first access unit is a picture order count (POC) resetting access unit;
• means for determining if the first access unit comprises one or more pictures comprising signaled POC most significant bits (MSB) information;
• means for determining if the first access unit meets a condition in response to the first access unit not being a POC resetting access unit and in response to the first access unit not comprising the one or more pictures comprising the POC MSB information;
• means for including in the first access unit, a recovery point supplemental enhancement information (SEI) message that applies to at least the first layer and the reference layer of the first layer in response to the first access meeting the condition;
• and
• means for generating the first access unit with the recovery point SEI message.