Video to GIF online ffmpeg

Hi! I am looking for someone is able to create a script for me to convert any video file specially, flv,mp4 (almost all which ffmpeg supported). At this demo site you will able to find that this site support Youtube and direct uploading also allow you to setup most of settings as well.. User could select Frame Rate, Bitrate etc usage.. Here is complete detail i required: [login to view URL] Requirements: 1. Youtube video Download and Direct Upload as well. 2. Preview Video 3. Almost all option you are able to seen in site or screenshots. 4. Add Watermark on video 5. Cron job to remove generated gif after XX minute 6. Video removed as soon as GIF generated. Admin Panel: 1. Set Video Size limit. 2. Set Video/GIF length Limit (in sec). 3. Setting Up [login to view URL] 4. Path to ffmpeg or imagemagik Important Note: I only required Video to GIF i did not required other option like meme, pie chart etc generator, and also don't required complete website, Thanks,