There are two different video file formats known as Flash Video: FLV and F4V. The audio and video data within FLV files are encoded in the same manner as they are within SWF files. The F4V file format is based on the ISO base media file formatand is starting with Flash Player 9 update 3.
Is a format of video coding from the Windows Media package. Video files in this format are encoded on technology Windows Media Video; about 15 codecs variants are available all up. It supports the streaming video display. Developed by Microsoft company.