Adaptive gop size control in h.264/avc encoding based on scene change detection

An efficient method is proposed to dynamically adapt the group of pictures (GOP) size in H.264/AVC encoding, by on-the-fly identification of scene changes in the input video signal. Intra coding picture decision is taken at the end of the pre-analysis phase of a fast motion estimation method based on spatial-temporal motion correlation. With negligible additional computation and memory requirements, the proposed method allows improving the compression of the whole coding process by up to 15%, without affecting the overall image quality