E.M. Total Video Converter (AKA: 超级转霸) is a fully functional and very powerful video/audio converter developed by EffectMatrix from China. As a universal solution for various video and audio conversions, it can help you quickly perform format conversions between various of popular video files, allowing you to enjoy your movies and music collection on all kinds of media playback devices with ease.

Due to the characteristics of digitized information, copyright proprietors have to use another unique technology to strengthen the copyright protection of their digital contents (including software, audio and video, electronic documents, electronic books, hardware), this technology is DRM (short for Digital Rights Management). However, the use of this technology for protecting digital content brings users great inconvenience on a variety of devices - you have to play your video/audio files on the specified devices or players due to the DRM copyright protection measure.

Allavsoft (full name: Allavsoft Video Downloader Converter) is a professional, user-friendly and multi-functional automatic web video downloading, converting and merging tool. On the one hand, it supports automatically downloading various resolutions of videos from 100+ popular video sharing websites all over the world (such like: YouTube, Facebook, YouKu, eHow, Vimeo, MTV, BBC, DailyMotion, etc.). In addition, it also comes with practical functions like video format conversion, video to audio conversion.

After the birth of 3D glasses, the source of 3D video became a vital problem. Therefore, we could find software everywhere that can help convert the common 2D video into 3D format (although the conversion results were somewhat disappointing). Similarly, the appearance of VR devices is also facing the same problem. That means we need to use specific tools to solve the problem of VR-3D video source. Now, among all VR-3D video converters, I think iFun Video Converter is an outstanding one, which leaves all competitors behind (one of the losers is: Wondershare's Video Converter Ultimate).

WebM is an open, high-quality video format defined by Google, specially designed for the web to save disk space and speed up the video file transfer. Its essence is a kind of new container format based on MKV that contains video streams compressed with the VP8/VP9 video codecs and audio streams compressed with Vorbis/Opus audio codecs.