Flash is a popular development tool used to create or add dynamic, animated images and objects on a Web page. Most of the animation you see on the Web today was created using Flash.

IRT supports Flash as the format of choice for video for a number of reasons:

Flash is cross-browser compatible, meaning if your video or other Flash file works on any system or browser, it will work on all of them. No need to provide multiple versions.
Flash files can be embedded and played within the context of any Web page. No external player required.
Over 95% of users already have Flash Player installed, according to Adobe/Macromedia. Installation takes moments for users who don't yet have it.
The use of Flash opens the door to a world of possibilities for interactivity.

Convert/Encode Flash Video| Flash Plug-in detection I Getting Video on Your Site I New Media Services