The WebM project is dedicated in developing a high-quality, open video format for the web that is freely available to everyone.
WebM is supported by Mozilla, Opera, Adobe, Google and more than seventy other publishers and software and hardware vendors. It is a format that is backed up by the majority of browser developers.
Fast video indexer is the leading professional software to capture images from video files. The Fast Video Indexer video frame capture program that use the same video playback system as Windows media player. Windows media player uses a system called DirectShow to play video and audio files.
DirectShow is a multimedia framework and API produced by Microsoft for software developers to perform various operations with media files or streams. It is the replacement for Microsoft’s earlier Video for Windows technology. It provides a common interface for media across various programming languages, and is an extensible, filter-based framework that can render or record media files on demand at the request of the user or developer.
There are free and commercial tools available for creating and publishing content in the WebM format.
Which provide DirectShow filters for playing and working with WebM on Windows. Once the filters are installed on your system, applications that use the DirectShow framework (such as Windows Media Player, and Fast Video Indexer) will be able to play and encode WebM media.
If you want to capture video frames from WebM videos you can use Fast video indexer provided you have installed WebM DirectShow filters.