这个工具可以：
1 扫描注册表来检测并移除损坏的解码器和过滤器的关联
2 为所有的解码器和过滤器产生一个详细的日志
3 启用或者禁止超过150个解码器和过滤器（安装是前提）
4 重置FFDSHOW到建议配置K-Lite Codec Tweak Tool will scan for broken filters and remove them. If the tool detects something that is broken, it will then prompt you with the details and you will be given the option to remove the broken item.

With this tool you can do things like:
* Scan the registry to detect and remove broken references to codecs and filters.
* Generate a detailed log of all installed codecs and filters.
* Enable/disable over 150 codecs and filters (if they are installed)
* Reset FFDShow to the recommended settings
* Fix non working system sound and more...

官网：http://www.codecguide.com/download_other.htm#codectweaktool

下载：(右键另存为~)
点击这里下载文件