Systems and methods for processing a syntax structure assigned a minimum value in a parameter set

A decoding device, comprising:

• a memory configured to store video data;
• and
• a processor configured to:
• receive an encoded video bitstream, the encoded video bitstream including one or more encoded video frames, wherein the encoded video bitstream is generated by an encoding device according to a first coding protocol, the encoded video bitstream including syntax elements produced by partitioning one or more frames of video data and conducting prediction on the partitioned one or more frames of video data, wherein the encoded video bitstream includes one or more enhancement layers and a video parameter set defining parameters of the one or more encoded video frames included in the encoded video bitstream, and wherein the one or more enhancement layers include one or more syntax elements from the syntax elements produced by the partitioning one or more frames of video data and conducting prediction on the partitioned one or more frames of video data;
• determine that a base layer is to be provided to the decoding device as part of an external bitstream, wherein the external bitstream is different from the received encoded video bitstream generated by the encoding device, wherein the external bitstream is provided to the decoding device by an external source and is not provided as part of the encoded video bitstream, wherein the base layer is encoded using a second coding protocol that is different from the first coding protocol, and wherein determining that the base layer is to be provided as part of the external bitstream includes determining that a flag in the encoded video bitstream is set to a value indicating that the base layer is to be provided as part of the external bitstream;
• determine to ignore a profile, tier, and level syntax structure assigned to the base layer in the video parameter set in response to determining the base layer is to be provided to the decoding device as part of the external bitstream, wherein the profile, tier, and level syntax structure assigned to the base layer in the video parameter set has a zero value in the encoded video bitstream based on the base layer being provided as part of the external bitstream, wherein the profile, tier, and level syntax structure defines profile, tier, and level parameters for one or more base layers defined using the first coding protocol, and wherein the profile, tier, and level parameters constrain coding tools, bitstream characteristics, or buffer characteristics required by the decoding device to decode the base layer that is to be provided as part of the external bitstream;
• and
• decode the encoded video data of the encoded video bitstream, wherein decoding includes decoding the one or more enhancement layers and the video parameter set, and wherein the encoded video bitstream does not include any base layer.

A non-transitory computer-readable medium of a decoding device having stored thereon instructions that, when executed by one or more processors, cause the one or more processors to:

• receive an encoded video bitstream, the encoded video bitstream including one or more encoded video frames, wherein the encoded video bitstream is generated by an encoding device according to a first coding protocol, the encoded video bitstream including syntax elements produced by partitioning one or more frames of video data and conducting prediction on the partitioned one or more frames of video data, wherein the encoded video bitstream includes one or more enhancement layers and a video parameter set defining parameters of the one or more encoded video frames included in the encoded video bitstream, and wherein the one or more enhancement layers include one or more syntax elements from the syntax elements produced by the partitioning one or more frames of video data and conducting prediction on the partitioned one or more frames of video data;
• determine that a base layer is to be provided to the decoding device as part of an external bitstream, wherein the external bitstream is different from the received encoded video bitstream generated by the encoding device, wherein the external bitstream is provided to the decoding device by an external source and is not provided as part of the encoded video bitstream, wherein the base layer is encoded using a second coding protocol that is different from the first coding protocol, and wherein determining that the base layer is to be provided as part of the external bitstream includes determining that a flag in the encoded video bitstream is set to a value indicating that the base layer is to be provided as part of the external bitstream;
• determine to ignore a profile, tier, and level syntax structure assigned to the base layer in the video parameter set in response to determining the base layer is to be provided to the decoding device as part of the external bitstream, wherein the profile, tier, and level syntax structure assigned to the base layer in the video parameter set has a zero value in the encoded video bitstream based on the base layer being provided as part of the external bitstream, wherein the profile, tier, and level syntax structure defines profile, tier, and level parameters for one or more base layers defined using the first coding protocol, and wherein the profile, tier, and level parameters constrain coding tools, bitstream characteristics, or buffer characteristics required by the decoding device to decode the base layer that is to be provided as part of the external bitstream;
• and
• decode the encoded video data of the encoded video bitstream, wherein decoding includes decoding the one or more enhancement layers and the video parameter set, and wherein the encoded video bitstream does not include any base layer.

A decoding device, comprising:

• means for receiving an encoded video bitstream, the encoded video bitstream including one or more encoded video frames, wherein the encoded video bitstream is generated by an encoding device according to a first coding protocol, the encoded video bitstream including syntax elements produced by partitioning one or more frames of video data and conducting prediction on the partitioned one or more frames of video data, wherein the encoded video bitstream includes one or more enhancement layers and a video parameter set defining parameters of the one or more encoded video frames included in the encoded video bitstream, and wherein the one or more enhancement layers include one or more syntax elements from the syntax elements, produced by the partitioning one or more frames of video data and conducting prediction on the partitioned one or more frames of video data;
• means for determining that a base layer is to be provided to the decoding device as part of an external bitstream, wherein the external bitstream is different from the received encoded video bitstream generated by the encoding device, wherein the external bitstream is provided to the decoding device by an external source and is not provided as part of the encoded video bitstream, wherein the base layer is encoded using a second coding protocol that is different from the first coding protocol, and wherein determining that the base layer is to be provided as part of the external bitstream includes determining that a flag in the encoded video bitstream is set to a value indicating that the base layer is to be provided as part of the external bitstream;
• means for determining to ignore a profile, tier, and level syntax structure assigned to the base layer in the video parameter set in response to determining the base layer is to be provided to the decoding device as part of the external bitstream, wherein the profile, tier, and level syntax structure assigned to the base layer in the video parameter set has a zero value in the encoded video bitstream based on the base layer being provided as part of the external bitstream, wherein the profile, tier, and level syntax structure defines profile, tier, and level parameters for one or more base layers defined using the first coding protocol, and wherein the profile, tier, and level parameters constrain coding tools, bitstream characteristics, or buffer characteristics required by the decoding device to decode the base layer that is to be provided as part of the external bitstream;
• and
• means for decoding the encoded video data of the encoded video bitstream, wherein decoding includes decoding the one or more enhancement layers and the video parameter set, and wherein the encoded video bitstream does not include any base layer.