GeoVid Movie to Flash SDK allows you to include video to flash conversion into your own application.
You can convert any video files to flash FLV or SWF. You do not need to know DirectShow or Video Edition to create flash from video.
Moyea FLV Converter SDK offers a technical solution to convert FLV online. It supports to convert FLV files youtube video to other format video files, such as flv to avi, flv to 3gp, flv to mpeg, flv to wmv, flv to mov, flv to mp3