PHP Video Upload Script

I need a script that will allow users to upload any video (avi, mpg, mp4, 3gp, mov) and convert to FLV. I also want it to create the first frame image which will display in the FLV player. We are still deciding on an FLV player, and have not chosen one as yet. I have ffmpeg and ffmpeg-php installed on a Linux server with PHP5 running. This is NOT for a YouTube type application! The purpose of this upload will be so that users can add video of items for sale to coincide with images that are there. I need the script to upload the video, convert it to flv, and then it will need to rename the file according to the key value of the product (in this case it is a live fish for sale) So as an example if the fish in our database is key value (id number) #10 then the video should arrive in the correct folder as [login to view URL] This should be a straight-forward project for someone who knows ffmpeg. Time is of the essense on this project.