Aiseesoft Video Downloader is the professional online video downloader to download online videos from YouTube, Google Video, Yahoo Video, iFilm, MySpace, Dailymotion, and many others. The supported video sites can be up to 150. The supported protocols includes http, rtsp, rtmp, mms, and more threads for downloading task. Also it allows you to convert the local and downloaded video files to any other video and audio formats automatically.