Expression Encoder is an advanced audio/video-encoding and live-broadcasting application especially suited for generating content that takes full advantage of the rich graphic and interactive capability of Microsoft Silverlight playback scenarios. You can also generate Windows Media video and audio files that are optimized for other web playback scenarios, or appropriate for playback on portable devices. Note: This free version of Expression Encoder 3 does not include support for IIS Smooth Streaming and H.264 encoding. To use these features, upgrade to Expression Encoder 3 with IIS Smooth Streaming.
More info: Download