Patent ID: 9210302
Filing Date: 2015-12-08
Classification: H04N

Abstract:
1. A method of transmitting a video bitstream to a first endpoint and at least a second endpoint with varying bandwidth capacities, comprising: separating a portion of the video bitstream into a first data partition and a second data partition, wherein the first data partition has prediction information for the portion of the video bitstream and the second data partition includes residual data information for the portion of the video bitstream; encoding the first data partition as encoded common data; encoding the second data partition as encoded high quality data at a first bitrate; encoding the second data partition as encoded low quality data at a second bitrate that is less than the first bitrate; transmitting a single copy of the encoded common data to an intermediary point that duplicates the encoded common data and transmits the encoded common data to the first endpoint and the second endpoint; transmitting the encoded high quality data to the first endpoint; and transmitting the encoded low quality data to the second endpoint, wherein the encoded common data and the encoded high quality data are combinable by a decoding process at the first endpoint to define a high quality representation of the portion of the video bitstream, the encoded common data and the encoded low quality data are combinable by a decoding process at the second endpoint to define a low quality representation of the portion of the video bitstream, and the encoded common data cannot be decoded to define a representation of the video bitstream without at least one of the encoded high quality data or the encoded low quality data.