Patent ID: 8488670

Claim:
A video decoder for improved prediction of video frames, the decoder comprising: one or more processors; one or more memories operatively coupled to the one or more processors, the one or more memories having instructions stored therein to cause the one or more processors to perform operations comprising: receiving, at the decoder, a coded bitstream; dequantizing, at the decoder, the coded bitstream to generate a dequantized bitstream; processing, at the decoder, the dequantized bitstream using an inverse transform function to generate output transform data, wherein computing the inverse transform function comprises using a first number of bits of precision which matches a number of bits of precision of an inverse transform function of an encoder that encoded the coded bitstream; and processing the output transform data to generate a sequence of digitized video images, wherein the digitized video images comprise a second number of bits of precision, the second number of bits of precision being less than the first number of bits of precision.