不论你是采用K-lite这类打包式的编解码器还是自己单独下载安装，都要清楚已经安装了哪些， InstalledCodec就是专门用于这个用途的软件。但是光查看怎么行，对于某个引起冲突的解码器我们还能采取措施将其禁用，保证它们之间的兼容性。

InstalledCodec is a small utility displays the list of all Codec drivers and DirectShow filters currently installed on your system. For each component the following information is displayed: Display Name, Type, Disabled Status, Installed/Modified Time, Description, Company Name, Filename, and more...
It allows you to easily disable or enable any Codec/DirectShow component or export the list into text/xml/html file.