Compatible stereoscopic video delivery

An apparatus for decoding a multiplexed image in a sequence of images, the apparatus comprising:

• one or more processors;
• wherein the one or more processors are configured to perform:
• accessing a first image and a second image;
• subsampling the first image according to a first checkerboard sampling pattern to generate samples of the first image;
• subsampling the second image according to a second checkerboard sampling pattern to generate samples of the second image;
• multiplexing the samples of the first image with the samples of the second image to generate a multiplexed image into a multiplexed format, wherein in the multiplexed image the samples of the first image and the samples of the second image are arranged in accordance with the multiplexed format in alternating order within even lines of the multiplexed image and in the opposite order in odd lines of the multiplexed image;
• and
• encoding the multiplexed image in the multiplexed format to generate a coded output image to be included in a coded bitstream, wherein the multiplexed format is determined by a recipient system using SEI messaging in the coded bitstream.

A non-transitory computer-readable storage medium having stored thereon computer-executable instruction for executing with one or more processors to perform:

• accessing a first image and a second image;
• subsampling the first image according to a first checkerboard sampling pattern to generate samples of the first image;
• subsampling the second image according to a second checkerboard sampling pattern to generate samples of the second image;
• multiplexing the samples of the first image with the samples of the second image to generate a multiplexed image into a multiplexed format, wherein in the multiplexed image the samples of the first image and the samples of the second image are arranged in accordance with the multiplexed format in alternating order within even lines of the multiplexed image and in the opposite order in odd lines of the multiplexed image;
• and
• encoding the multiplexed image in the multiplexed format to generate a coded output image to be included in a coded bitstream, wherein the multiplexed format is determined by a recipient system using SEI messaging in the coded bitstream.