You can use the following sample code to publish any format video to flash flv, mp4, vp8 webm, ogg vorbis, grab thumb in one step using ASP.NET Media Handler Pro.

Note: You need to download latest ffmpeg build with support of VP8 codec

Sample Code:
[quote]
         _mhandler.InputPath = RootPath + "\\contents\\original";
        _mhandler.OutputPath = RootPath + "\\contents\\output";
         VideoInfo info = new VideoInfo();
        _mhandler.FileName = "sample.wmv";
        _mhandler.OutputFileName = "sample";
         //***************************************
         //FLV Encoding
&.... read more.

Everyone who has visited YouTube.com in the past four years knows that you can embed video in a web page. But prior to HTML5, there was no standards-based way to do this.  Every video you've watched on the web has been funneled through a third party plugin (QuickTime, RealPlayer, Flash). 

HTML5 defines a standard way to embed video in a web page, using a <video> element. Support for the <video> element is still evolving, which is a polite way of saying it doesn’t work yet. At least, it doesn’t work everywhere. But don’t despair! There are alternatives and fallbacks and options.

Video Codecs:

There are tons of video codecs. The three most relevant codecs are H.264, Theora, and VP8.

i H.264 is also known as “MPEG-4 part 10,” a.k.a. “MPEG-4 AVC,” a.k.a. “MPEG-4 Advanced Video Coding.” H.264 was also devel.... read more.