这个扩展内置了视频格式转换的功能，但最终文件有水印，所以尽量下载MP4文件，没有的话再考虑FLV文件。
The extension provides a built-in method for converting video files, but they will end up watermarked, so just download the files in MP4 if possible, or FLV if not.
最后，描述了在统一的框架体系中，实现在电子文件和印刷品文件上的嵌入、检测数字水印的方法。
At last, a united system about how to embed and detect text digital watermarking in electronic and print files was described.
肮脏的文件格码的水印完整的源代码，已经过测试。
Dirty paper trellis code for watermarking complete code, has been tested.
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