Method and device for video down-sampling transcoding

摘要

The present invention relates to relates to a reduced image coding method and apparatus, and more particularly, how to perform the image reduction in the H.264 to MPEG-4 at a high speed, and devices. Image reduction transcoding method for converting a first macro block according to a first scheme to the second macro block according to a second method (a) a first condition that the number of intra-macro blocks included in the macro block is set in advance If they do, the method comprising: determining a block mode of the second macroblock, and converted to a determined block mode; (B) step of if the number of the inter macroblock included in the first macro block meets a second condition, determining a block mode of the second macroblock, and converted to a determined block mode; And (c) When the conversion is complete, the macro block may comprise the step of performing motion vector for a second macroblock remediation. ; Image reduction, transcoding a macroblock, the motion vector