The FLV video cannot be played. Video not found is displayed.

Open IIS, and then on the Local Computer
Right-click the attribute above (this is not mentioned in many help files. Many people think that they are right-clicking on the site, but find that the MIME type is not found, where mypc is your computer name)

Click "MIME type", and then click New to add the associated extension:. FLV, content type: FLV-application/octet-stream.

After confirmation, the server will be able to support FLV video playback. If not, try Restarting IIS!

TIPS: if you cannot add the "MIME type" to your computer, you can change the suffix of FLV to SwF. This is also acceptable (but it is not recommended )!