What is FLV?
Flix software can produce FLV files which contain Flash Video, both 1-pass and 2-pass VBR. These FLV files can be imported into the Adobe Flash CS3 authoring tool in order to design a SWF interface to play the file on a website. FLV files can also be played with our FlixFLV Player utility, or FLV Player from Martin Devisser. Flix uses MP3 for the audio within FLV, and on Windows it can also use uncompressed (WAV) audio.
FLV is the preferred file format for delivering video clips via Flash. It is a specialized file format that has been supported from version 7. FLV files cannot be played back directly but must be embedded in (or linked from) an SWF file. You create (or download) a “container” SWF file from which to play the FLV file. The most common approach is to use an SWF file that functions as a media player with screen and playback controls. Notable users of the FLV format include Google Video and YouTube.