Convertion of video formats to flash player format

Hi,

We have a java web application where users will be submitting videos. I'm trying to write a java program that is able to convert any movie file into compressed SWF video and FLV streaming video formats. The code should convert almost all popular file extensions such as AVI, MPEG, WMV, ASF and 3GP.

I've never worked with filestreaming etc before, so I would appreciate any insight you can provide on how I can go about doing this.

Thanks.

Many people have asked this question a lot of time like here and here but with no concrete solution.
The poster here seems to be doing something of the similar sort with an "flvtool" but i am not sure what it does.

Anyways, i will move it to an appropriate forum.