Patent ID: 8654853

Claim:
A method for transcoding from an MPEG-2 format to a VC-1 format, comprising the steps of: (A) decoding an input video stream in said MPEG-2 format to generate a picture; (B) determining an MPEG-2 quantization parameter of said picture during said decoding; (C) determining a plurality of coefficient magnitudes of said picture during said decoding; (D) coding said picture into an output video stream in said VC-1 format using said coefficient magnitudes to determine a transform block size in a VC-1 encode; and (E) controlling an encoder rate of said output video stream in said VC-1 format using said MPEG-2 quantization parameter as a VC-1 macroblock complexity indicator of each of a plurality of VC-1 macroblocks in a VC-1 encode rate control.