Free WebM Encoder is a simple utility that lets you convert your video files to the new WebM format. The program has an extremely easy-to-use interface. Just add the files you want to convert to the list (you can drag and drop them directly from Windows Explorer) and click the convert button. A variety of video formats can be converted, including AVI, MP4, FLV, WMV, and MOV.

The license of this software is Freeware, you can free download and free use this video utility software.