Patent ID: 7660355

Claim:
A method for transcoding between video streams using different entropy coding, comprising the steps of: (A) parsing a first video stream with a first circuit using context adaptive binary arithmetic coding codes; (B) generating a first intermediate signal with said first circuit, said first intermediate signal carrying a plurality of first quantized coefficient values recovered from said first video stream; (C) generating a plurality of second quantized coefficient values with a second circuit by reducing a bit-depth of particular ones of said first quantized coefficient values received in said first intermediate signal, said particular first quantized coefficient values being represented by greater than a predetermined bit-depth; (D) generating a second intermediate signal with said second circuit, said second intermediate signal carrying (i) said second quantized coefficient values and (ii) given ones of said first quantized coefficient values, said given first quantized coefficient values being represented by no more than said predetermined bit-depth; and (E) generating a second video stream with a third circuit by entropy encoding said second intermediate signal, said entropy encoding using a set of entropy codes that is different than said context adaptive binary arithmetic coding codes.