Attribute layers and signaling in point cloud coding

A video encoder comprising:

• a processor configured to:
• obtain a plurality of point cloud coding (PCC) components including geometry, texture, and one or more of reflectance, transparency, and normal;
• encode the PCC components into a bitstream as one or more network abstraction layer (NAL) units;
• encode into the bitstream a plurality of indications of a plurality of video coder decoders (codecs) used to compress the PCC components, wherein the indications of the video codecs indicate a first PCC component is compressed by a first video codec and a second PCC component is compressed by a second video codec;
• encode into the bitstream an attribute type identifying video data as one or more of attribute texture, attribute reflectance, attribute transparency, and attribute normal;
• and
• encode into the bitstream for each PCC attribute, an indication of one of the codecs used to code the each PCC attribute;
• and
• a memory coupled to the processor and configured to store the bitstream.

A video decoder comprising:

• a receiver configured to receive a bitstream comprising a plurality of point cloud coding (PCC) components including geometry, texture, and one or more of reflectance, transparency, and normal represented by one or more network abstraction layer (NAL) units;
• and
• a processor coupled to the receiver and configured to:
• parse the bitstream to obtain a plurality of indications of a plurality of video coder decoders (codecs) used to compress the PCC components, wherein the indications of the video codecs indicate a first PCC component is compressed by a first video codec and a second PCC component is compressed by a second video codec, wherein the bitstream further comprises an attribute type identifying video data as one or more of attribute texture, attribute reflectance, attribute transparency, and attribute normal;
• and
• decode the bitstream based on the indications of the video codecs for the PCC components.