说明：声音叠加源码，多媒体源码，易语言编写的。
Sound addition source, multimedia source code, easy language.
满足了在视频上叠加额外信息的需要，进一步扩展了多媒体播放系统的系统功能。
When playing video in the client, we can selectively superimpose the image to the video as we wish to add additional information on the further expand of multi-media system.
视频图像叠加是多媒体技术应用领域之一，是电视技术与计算机技术结合的产物。
The video image-overlapping is one of the multimedia technology applications, and it is the result that the technology of the TV combined with the technology of the computer.
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