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基于子图划分的高清晰度电视（ＨＤＴＶ）视频编码器，先将１ ９２０×１ １５２ 的ＨＤＴＶ画面划分成６ 个１ ９２０×１９２ 的水平条状子画面，由６ 个子编码器并行编码，最后将６ 路码流合成为ＨＤＴＶ码流．文中以场景切换检测为依据，进行动态图像组（ＧＯＰ）结构调整，以Ｉ帧场景复杂度为依据进行码率分配．实验表明，该策略能很好地保证子图重建质量和ＨＤＴＶ各子图之间主观重建质量的一致性，清除可能出现的子图划分效应．
Based on the subdivision of high definition television (HDTV) video encoder, the first 1920 × 1 152 HDTV picture is divided into 6 horizontal 920 × 192 horizontal strip sub-picture, encoded by 6 sub-encoder in parallel, and finally 6 Road codestream into HDTV stream. In this paper, scene switching detection is used as a basis to adjust the GOP structure, and rate allocation is based on I-frame scene complexity. Experiments show that this strategy can well guarantee the consistency of subgraph reconstruction quality and the quality of subjective reconstruction between subgraphs of HDTV, and eliminate the possible subgraph dividing effect.