Project to build animated GIF

Hi This is a 3-4 page project (HTML designs already available). In the website, the user will enter a YouTube URL and specify the starting and ending point of the clip. Based on these specifications, the script will generate an animated GIF. The core functionality in the website will involve: 1) Decrypt youtube URL and find exact flv file 2) Download FLV file 3) Take snapshots of FLV file using FFMPEG 4) Convert them in to Gif file