在低比特率视频编码时，全零块的预先判断，能够有效地减少编码器的计算复杂性，是优化编码器常用的技术之一。
In the low rate video encoding process, predetermination of all-zero blocks which can be applied to reduce the computational complexity is a common method to optimize the software coder.
文章最后讨论了H . 261视频编码器在多媒体处理芯片TM 1300上的实现与优化问题。
At last, the problem of realization and optimization of H. 261 video codec on TM1300 is discussed.
请注意，这些数字是“最佳”的情况：我们正在测试三个编码器都为峰值信噪比做了专门优化，而这也正是VP8编码器规范当前做的。
Note that these Numbers are a "best-case" situation: we're testing all three optimized for PSNR, which is what the current VP8 encoder specializes in as well.
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