Flash Video files can be stream & delivered in several different ways on the web. Main delivery options are.

• As a standalone .FLV file.
• Embedded in SWF file using Flash Authoring Tool.
  
• Progressive Download via HTTP.
• Streaming via RTMP to the Flash Player using Flash Media Server.

Standalone .FLV File:
It is the normal way to deliver Flash video using a Flash player to control. The .FLV file itself is only playable with an FLV player.
Embedded in SWF File:
In this approach, the entire file must be transferred before playback can begin. Changing the video requires rebuilding the SWF file.
Streaming via RTMP to the Flash Player using Flash Media Server.
Streamed via RTMP to the Flash Player using the Flash Media Server (formerly called Flash Communication Server).
Progressive Download via Http:
This method uses ActionScript to include an externally hosted Flash Video file for playback. Progressive download has serveral advantages, including buffering, use of generic HTTP servers and the ability to reuse a single SWF player for multiple Flash Video sources.
In this way you can access video files using the partial download functionality of HTTP, sometime referred to as streaming.
However, unlike streaming using RTMP, HTTP "streaming" does not support real-time broadcasting.

Streaming via HTTP requires a custom player and the injection of specific Flash video metadata containing the exact starting position in bytes and timecode of easy keyframe. Using this specific information, a custom Flash Video player can request any part of the Flash Video file starting at a
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