Patent ID: 8218633
Filing Date: 2012-07-10
Classification: H04N

Abstract:
1. A system, comprising: a bidirectional encoder configured to encode video data using bidirectionally decodable Wyner-Ziv video coding to generate encoded video frames for transfer over a channel, wherein the encoded video frames include at least one M-frame, and the at least one M-frame is a P-frame with multiple decoder selectable reference frames at the bidirectional encoder, and wherein the bidirectional encoder includes an encoder comprising a rate determiner configured to identify a rate of an error correction code using a two-pass algorithm that simulates forward decoding and backward decoding, and the rate determiner is further configured to encode and decode frames in a current group of pictures in temporal order for a first pass and encode and decode frames in the current group of pictures in reverse temporal order for a second pass.