Thought about the deliver system

Based our forum’s new function is give the user space for them upload and streaming the movies, so the deliver system is the higher request

I did the research as below:
1) ICA – I’m not quite sure about this tech, I just know it is a desk can open anywhere, user can get the data form the desk very safely, but this specialize tech seems very expansive.

2) BT- it have the security problem so I think that might gets trouble for the users, although BT have the main advantage is can reduce the bandwidth traffic, also need not a big storage server for the movies up and down loading.


3) FTP- it is very popular way to deliver the large file, the thing is user have to download the software firstly then can download the file, I don’t know weather the users can be get up set.

4) PHP – I don’t know how many cost and how long if fire a group PHP programmer to build up whole new things, but why not try?

Other thing is how are users streaming the movies? Which format of the movies I can choose?
The first idea I got is using window media player and quick time streaming tech, it seems the quick time streaming is not free, I m goanna chick it.