Encoding method and apparatus for reducing dynamic power consumption during video encoding

An encoding method, comprising:

• collecting, by an encoder, characteristic information of a macroblock, wherein the characteristic information is generated during encoding and comprises a motion vector, inter-frame complexity, and intra-frame complexity of the macroblock that has undergone integer pixel motion estimation;
• calculating, by the encoder, values of max(|mvx−mvxn|) and max(|mvy−mvyn|), wherein (mvx, mvy) is the motion vector of the macroblock that has undergone the integer pixel motion estimation, and (mvxn, mvyn) is a motion vector of an adjacent block adjacent to the macroblock;
• determining, by the encoder, a motion type of the macroblock according to the calculated values, wherein the step of determining a motion type of the macroblock according to the motion vector of the macroblock that has undergone the integer pixel motion estimation and the motion vectors of the adjacent block adjacent to the macroblock comprises:
• determining whether motion vector values mvx and mvy of the macroblock both are equal to 0 and whether the inter-frame complexity of the macroblock is less than a first threshold, wherein when the motion vector values mvx and mvy of the macroblock both are equal to 0 and the inter-frame complexity of the macroblock is less than a first threshold, the motion type of the macroblock is motionlessness;
• determining whether the values of max(|mvx−mvxn|) and max(|mvy−mvyn|) are both less than a second threshold, wherein when the values of max(|mvx−mvxn|) and max(|mvy−mvyn|) are both less than a second threshold, the motion type of the macroblock is strictly true motion;
• and
• determining whether the values of max(|mvx−mvxn|) and max(|mvy−mvyn|) are both less than a third threshold, wherein when the values of max(|mvx−mvxn|) and max(|mvy−mvyn|) are both less than a third threshold, the motion type of the macroblock is true motion, and the second threshold is less than the third threshold;
• and
• enabling or disabling, by the encoder according to the motion type of the macroblock, a part of work processes that are performed during the encoding.