This tool is used to convert Web Media (webm) to Apple QuickTime Movie (mov).

WebM is an audiovisual media file format. It is primarily intended to offer a royalty-free alternative to use in the HTML5 video and the HTML5 audio elements. It has a sister project WebP for images.

QuickTime File Format is a computer file format used natively by the QuickTime framework. It is the native multimedia format for QuickTime.