Exp - golomb codes are applied to code the pairs of the run - length of zero coefficients and the nonzero coefficient for lower storage requirement . c2dvlc is a low complexity coder in terms of both computational time and memory requirement 以往视频编码标准如h . 263定义了可选择的算术编码器，新近的h . 264 avc标准也采用了高效的算术编码方法cabac 。
