Method and apparatus for generating encoded content using dynamically optimized conversion

Abstract

An initial content is encoded a first time to obtain a first encoded content. One or more parameters obtained from the first encoding are used to generate an encoding coefficient. The initial content is encoded a second time to obtain a second encoded content. The second encoding is performed using encoding coefficients, at least one of which is derived from the parameter associated with the first encoding. The two encodings can be implemented using a single encoder or two separate encoders.

1 . An apparatus for generating encoded content in an output format from an initial content in an initial format comprising:
 a log storing encoding coefficients generated when said initial content is encoded a first encoded content using a first encoding scheme, said first encoded being suitable for display on a first display device;   an encoder receiving said initial content and encoding said initial content into a second encoded using a second coefficient; and   a coefficient generator receiving said first coefficient and generating said second encoding coefficient based on said first coefficient.   
     
     
         2 . The apparatus of  claim 1  wherein said coefficient generator includes a processor element receiving an initial parameter and generating said second coefficient from said initial parameter. 
     
     
         3 . The apparatus of  claim 1  wherein said encoder encodes said initial content twice using different encoding coefficients for each encoding. 
     
     
         4 . The apparatus of  claim 2  wherein coefficient generator includes an analyzer that analyzes the first encoded content to determine said initial parameter. 
     
     
         5 . The apparatus of  claim 1  wherein said coefficient generator includes a mapping member mapping said parameter into said coefficient. 
     
     
         6 . A method of generating an output encoded content from an initial content comprising the steps of:
 generating a first parameter based on a first encoding of said initial content; and   encoding said initial content using an encoder to obtain a second encoded content, said encoder performing said encoding using an encoding coefficient derived from said first parameter, wherein said first parameter is generated during said initial encoding by an initial encoder and compiled in a log and wherein said encoding coefficient is generated from said first parameter from said log.   
     
     
         7 . The method of  claim 6  further comprising processing said first parameter into a form suitable for encoding to obtain said final encoded content. 
     
     
         8 . The method of  claim 6  further comprising analyzing said previously encoded content and generating from said previously encoded content said first parameter. 
     
     
         9 . The method of  claim 6  wherein said parameter is one of groups of pictures (GOP) associated with various segments, frames or scenes, bit rate parameters associated with each GOP, (e.g., peak, average, minimum values), I-frames, video buffer size and a motion vector. 
     
     
         10 . The method of  claim 6  wherein said second encoder performs said second encoding using at least one encoding coefficient, wherein said encoding coefficient is related to said parameter. 
     
     
         11 . The method of  claim 6  wherein said second encoder performs said second encoding using at least a first and a second encoding coefficient, wherein said first encoding coefficient is preselected and said second encoding coefficient is dependent on said parameter. 
     
     
         12 . The method of  claim 6  wherein said second encoder performs said second encoding using a set of coefficients including a first subset of coefficients and a second subset of coefficients, and wherein said first subset of coefficients are preset and said second set of coefficients is derived from said parameters. 
     
     
         13 . The method of  claim 6  wherein said second encoder performs said second encoding using a set of coefficients, further comprising mapping said parameters to derive said set of coefficients.