Microsoft Expression Encoder (formerly Expression Media Encoder) is a transcoding and non-linear video editing software application for Microsoft Windows. It can create video streams for distribution via Microsoft Silverlight.
Expression Encoder is a transcoding and linear video editing program. It features a graphical user interface based on Windows Presentation Foundation (WPF) as well as a command line interface.
Expression Encoder can export videos to H.264 or VC-1 formats. It can prepare video streams for distribution via Microsoft Silverlight; it supports Silverlight player controls and Silverlight templates.Microsoft Expression Encoder is available in different editions:
1. Pro edition, the full-featured commercial incarnation of the product available through retail or volume licensing outlets as well as the BizSpark program
2. Pro edition without codecs, which lacks royalty-incurring codecs and is available to DreamSpark, WebsiteSpark or MSDN subscribers; this version does not support H.264, Advanced Audio Coding (AAC), AVCHD, MPEG-2 and Dolby Digital (AC-3) formats
3. Express edition, which is free of charge but feature-limited; this version does not support H.264 encoding or Live Smooth Streaming and Silverlight DRM