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What Is FLV Video?

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Flash Video (FLV, F4V) is a container file format used to deliver video over the Internet using Adobe Flash Player versions 6-11. Flash Video content may also be embedded within SWF files. 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 way as they are within SWF files. The latter F4V file format is based on the ISO base media file format and is supported starting with Flash Player 9 update 3. Both formats are supported in Adobe Flash Player and currently developed by Adobe Systems. FLV was originally developed by Macromedia.

The format has quickly established itself as the format of choice for embedded video on the web. Notable users of the Flash Video format include YouTube, Hulu, Google Video, Yahoo Video, Metacafe, Reuters, and many other news providers.

You may be interested in converting AVI video to FLV for uploading online or other purposes.

Flash Video (FLV and F4V) files usually contain material encoded with codecs following the Sorenson Spark or VP6 video compression formats. The most recent public releases of Flash Player also support H.264 video and AAC audio. Flash Video is viewable on most operating systems, via the widely available Adobe Flash Player and web browser plugin, or one of several third-party programs.

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. 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. It is the required video compression format for Flash Player 6 and 7.

Flash Player 8 and newer revisions also support the playback of On2 True-Motion VP6 video bit streams. On2 VP6 is the preferred video compression format for use with Flash Player 8 and higher. On2 VP6 can provide a higher visual quality than Sorenson Spark, especially when using lower bit rates. On the other hand it is computationally more complex and therefore will not run as well on certain older system configurations.

And audio in Flash Video files is usually encoded as MP3. However, audio in Flash Video FLV files recorded from the user's microphone. FLV files also support uncompressed ADPCM format audio. From the version 9, Flash Player support AAC audio format.

Supported Media Types in FLV File Format:

Video: On2 VP6, Sorenson Spark (Sorenson H.263), Screen video, H.264
Audio: MP3, ADPCM, Linear PCM, Nellymoser, Speex, AAC, G.711 (reserved for internal use)

Supported Media Types in F4V Tile Format:

Video: H.264
Images (still frame of video data): GIF, PNG, JPEG
Audio: AAC, HE-AAC, MP3

Related Software

WinX HD Video Converter Deluxe: Built in hundreds of A/V codecs and equipped with Online Dailymotion/Facebook/YouTube Video Downloader and Photo Slideshow Maker functions. As all-in-one HD Video Converter software, it helps you transcode HD video formats like convert AVCHD M2TS to MKV, convert Blu-ray to MKV, H.265/MKV to MP4, etc. Moreover, it is embedded with numerous profile settings for Apple, Samsung, HTC, Sony, Microsoft portable devices, iOS, Android, Windows mobiles. Convert MKV to iPhone, MKV to iPad are good examples.

WinX HD Video Converter for Mac: Professional HD Video converter for converting HD Videos on Mac OS, provides the perfect solution to convert Blu-ray videos and videos from HDTV and HD camcorders, like JVC, Panasonic, Sony and Cannon to other formats. Also act as a Mac screen and camera video recorder, slideshow maker, Online Dailymotion/Facebook/YouTube video downloader, etc. Running perfectly on Mac OS X Snow Leopard/Lion/Mountain Lion/Mavericks/Yosemite/El Capitan.

WinX DVD Ripper Platinum: Advanced version of free WinX DVD Ripper. Besides converting DVD to AVI at fastest speed in excellent quality, also converting DVD to MP4, MPEG, MOV, WMV, FLV, M2TS, TS, iPhone, iPod, iPad, Android, Samsung, HTC, Microsoft, Google, Sony, Nokia, Asus, Acer, etc. Makes perfect 1:1 DVD to ISO image/DVD folder copy and clone DVD to multi-track MPEG2 file with 5 minutes only. Constantly update to defeat upcoming DVD copy protections.

WinX DVD Ripper for Mac: Mac version WinX DVD Ripper Platinum, best DVD converter for Yosemite/Mavericks/Mountain Lion/Tiger/Leopard/Snow Leopard, convert DVD to MP4, H.264, MOV, M4V videos that are playable on Mac computer, as well as DVD to iPhone, iPod, iPad, Apple TV, iTunes, iDVD, iMovie, Final Cut Pro, Air Playit, Android, etc.

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Related External Source

Flash Video - Flash Video is a container file format used to deliver video over the Internet using Adobe Flash Player versions 6–11. Flash Video content may also be embedded within SWF files...

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