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| Name | GIF | FLV |
| Full name | GIF - CompuServe Graphics Interchange Format | FLV - Flash Video |
| File extension | .gif | .flv, .f4v, .f4p, .f4a, .f4b |
| MIME type | image/gif | video/x-flv |
| Developed by | CompuServe | Adobe Systems |
| Type of format | lossless bitmap image format | Media container |
| Description | The Graphics Interchange Format (better known by its acronym GIF) is a bitmap image format that was introduced by CompuServe in 1987 and has since come into widespread usage on the World Wide Web due to its wide support and portability. | Flash Video is a container file format used to deliver video over the Internet using Adobe Flash Player version 6 and newer. Flash Video content may also be embedded within SWF files. Flash Video used to be the de facto standard for web-based streaming video. Notable users of it include Hulu, VEVO, Yahoo! Video, metacafe, Reuters.com, and many other news providers. |
| Technical details | GIF supports up to 8 bits per pixel for each image, allowing a single image to reference its own palette of up to 256 different colors chosen from the 24-bit RGB color space. GIF images are compressed using the Lempel-Ziv-Welch (LZW) lossless data compression technique to reduce the file size without degrading the visual quality. | 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 format and is starting with Flash Player 9 update 3. Both formats are supported in Adobe Flash Player and developed by Adobe Systems. |
| Associated programs | Apple Safari, Google Chrome, Mozilla Firefox, Internet Explorer, Adobe Photoshop, Paint Shop Pro, the GIMP, ImageMagick, IrfanView, Pixel image editor, Paint.NET. | Adobe Flash Player |
| Wiki | https://en.wikipedia.org/wiki/GIF | https://en.wikipedia.org/wiki/Flash_Video |