We need a php/mysql script to enable user from an existing application (written in ASP and located on another server with SQL Server as DB, we call it "A") to upload videos on our free channel on Youtube through the API via the video application (we call it "B"). Here the features that must have the application "B": -the form upload is opened in a popup launched by the A -A send a request to B via POST with UserID, IdAds, Text, Tags, Title for the video. -B receive the data and show the form...