Producing an Output Need Parameter for an Encoder

摘要

A target bit rate determination model is provided that allows information from a look ahead encoder or a decoder to be used to produce a need parameter for an encoder. Two ways to control an encoder system are provided. In the first control method, statistics from a look ahead encoder and knowledge of bitrate requirements for different codecs are used to create a need parameter control input for the primary encoder. In the second method, statistics from a decoder and knowledge of decoder and encoder behavior are used to create a need parameter control input for the primary encoder.

主权项

1. A dual pass encoding system comprising:
a primary encoder receiving raw video frames from the system input and providing a compressed video output; a lookahead encoder receiving the raw video frames provided to the input to the primary encoder; a need parameter model module that receives a complexity value output from the lookahead encoder, maps the complexity to a need parameter value, and provides the need parameter value to the primary encoder.