Through comparison of the performance of H.263 coder with that of H.264 coder by experiment, the latter improves several performances such as: the coding speed, compaction ratio and signal noise ratio. 实验表明该软件编码器比H.263软件编码器在图像编码速度、压缩比及信噪比上有一定的提高,整个软件编码器可实现在IP网络上的实时编解码。