Both formats are supported in Adobe Flash Player and developed by Adobe Systems. The F4V file format is based on the ISO base media file format and is starting with Flash Player 9 update 3. The audio and video data within FLV files are encoded in the same manner as they are within SWF files. There are two different video file formats known as Flash Video: FLV and F4V.
It is a common audio format for consumer audio streaming or storage, as well as a de facto standard of digital audio compression for the transfer and playback of music on most digital audio players.
MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is an audio coding format for digital audio which uses a form of lossy data compression. Notable users of it include Hulu, VEVO, Yahoo! Video, metacafe,, and many other news providers. Flash Video used to be the de facto standard for web-based streaming video. Flash Video content may also be embedded within SWF files. Flash Video is a container file format used to deliver video over the Internet using Adobe Flash Player version 6 and newer.
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