MP4 to FLV

Convert MP4 to FLV - online and free - this page also contains information on the MP4 and FLV file extensions.

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File extension .mp4
Category Video File
Description MP4 files (MPEG-4 Part 14) are multimedia files. MP4 is a container format that can store video, audio and subtitle data (as well as more depending on content). Since stores like iTunes uses this container format, and it is used with iPod and PlayStation Portable (PSP), MP4 files have become more common.
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Technical Details MPEG-4 Part 14 or MP4, formally ISO/IEC 14496-14:2003, is a multimedia container format standard specified as a part of MPEG-4. It is most commonly used to store digital video and digital audio streams, especially those defined by MPEG, but can also be used to store other data such as subtitles and still images. Like most modern container formats, MPEG-4 Part 14 allows streaming over the Internet. A separate hint track is used to include streaming information in the file. The only official filename extension for MPEG-4 Part 14 files is .mp4.
Associated programs Apple QuickTime Player
Apple iTunes
Microsoft Windows Media Player
VideoLAN VLC Media Player
Developed by Moving Picture Experts Group
MIME type audio/mpeg
Useful links Detailed information on the MP4 File Format
How to play MP4 files
Convert MP4 file
File extension .flv
Category Video File
Description The Flash Video format is a video format defined by Adobe Systems. Flash Video has been accepted as the default online video format by many sites. Notable users of it include YouTube, Hulu, VEVO, Yahoo! Video, metacafe, Reuters.com, and many other news providers. Flash Video is viewable on most operating systems except iOS, via the Adobe Flash Player and web browser plugin or one of several third-party programs.
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Technical Details Flash Video FLV files contain video bit streams which are a proprietary variant of the H.263 video standard, under the name of Sorenson Spark (FourCC FLV1). Sorenson Spark is an older codec for FLV files but it is also a widely available and compatible one, because it was the first video codec supported in Flash Player. The Flash Video FLV file format supports two versions of a so called 'screenshare' (Screen video) codec which is an encoding format designed for screencasts. Both these formats are bitmap tile based, can be lossy by reducing color depths and are compressed using zlib. The second version is only playable in Flash Player 8 and newer - Audio in Flash Video files is usually encoded as MP3. However, audio in Flash Video FLV files recorded from the user's microphone use the proprietary Nellymoser Asao Codec. FLV files also support uncompressed audio or ADPCM format audio.
Associated programs FFDShow
Microsoft Windows Photo Gallery Viewer
VideoLAN VLC Media Player
Windows Media Player
Developed by Adobe Systems Incorporated
MIME type video/x-flv
Useful links How to play FLV Files
More detailed information on FLV Files
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