Algorithms for determining bitrate for a statistical multiplexing system using scene change

A statistical multiplexer for coding a plurality of channels of video data sources, the statistical multiplexer comprising:

• a look ahead buffer (LAB) for storing the video data prior to encoding;
• an encoder for compressing the video data and providing the video data to a multiplexer in the statistical multiplexer;
• and
• a processor for evaluating data within the LAB to determine complexity of the data, providing a need parameter to a statmux controller based on the determined complexity of the data and for receiving a bit rate from the statmux controller to control the compressing of the video data in the encoder, wherein the processor operates based on code stored in a memory that causes the processor to perform the following during the process of evaluating data within the LAB:
• detect a scene change present in the video data to be encoded;
• determine a first complexity of a current scene prior to the detected scene change;
• determine a second complexity of a new scene after the detected scene change;
• and
• determine an overall complexity rate for encoding the video data in the given encoder by combining the first complexity and the second complexity.

A non-transitory computer readable medium containing an executable program to enable allocating bits to a state machine in an individual encoder in a statistical multiplexer (statmux) system, the program causing the state machine to:

• detect a scene change present in video data to be encoded in the individual encoder;
• determine a first complexity of a current scene prior to the detected scene change;
• determine a second complexity of a new scene after the detected scene change;
• determine an overall complexity rate for encoding the video data in the individual encoder by combining the first complexity and the second complexity;
• and
• provide the overall complexity rate as need parameter for determination of a bit rate for encoding the video data.