classifieds with video portal

We need to modify the joomla video sharing as under:- The idea is to offer companies 4 video channels. [login to view URL] 1..> [login to view URL] 2..> [login to view URL] 3..> [login to view URL] 4..> Companies will register online, add themselves to a product category, prepare a profile. then add videos online to the channels. Each channel will have a link back which can be placed on their website. The admins will moderate the videos for approval. Free and paid listings as per bandwidth usage will be allowed. The mods of joomla that need to be modified are :- [login to view URL] and [login to view URL] and [login to view URL] In the above video mods we want to replace the fla player with another one and when video converts in fla we want two files to be created one for low bandwidth and another for high bandwidth.