After uploading an HTML page with embedded movie in an f4v format, the player just keeps loading and would not play the video.

It is because your source video (f4v in this case) is in unknown location. If the swf file is in the same root folder as your f4v file, then make your source as just the f4v filename instead of C:\Location\wedding.f4v as per image below.

 

 

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