


Flash Player does not check the filename extension but instead examines the file to determine the format of the thing created.
#Flv crunch not working mp4
In this way, the F4V format shares a common base with the MP4 format, which is why F4V is sometimes informally called "Flash MP4". Because of restrictions in the FLV file format, Adobe Systems created new file formats in 2007, based on the ISO base media file format (MPEG-4 Part 12). The 2003 release of Flash Player 7 added direct support for the FLV file format. The 2002 release of Flash Player 6 added support for video in the SWF file format. Apple's iOS devices, along with almost all other mobile devices, do not support the Flash Player plugin and so require other delivery methods such as provided by the Adobe Flash Media Server. Flash Video is viewable on most operating systems via the Adobe Flash Player and web browser plugin or one of several third-party programs.

All of these compression formats are restricted by patents. As of 2010 public releases of Flash Player (collaboration between Adobe Systems and MainConcept) also support H.264 video and HE-AAC audio. Users include Hulu, VEVO, Yahoo! Video, metacafe,, and many other news providers.įlash Video FLV files usually contain material encoded with codecs following the Sorenson Spark or VP6 video compression formats. In the early 2000s, Flash Video was the de facto standard for web-based streaming video (over RTMP). FLV was originally developed by Macromedia. 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, starting with Flash Player 9 update 3. The audio and video data within FLV files are encoded in the same way as SWF files. There are two different Flash Video file formats: FLV and F4V. Flash Video content may also be embedded within SWF files. Flash Video is a container file format used to deliver digital video content (e.g., TV shows, movies, etc.) over the Internet using Adobe Flash Player version 6 and newer.
