F4F File Type

- The quick facts

What are F4F files and how to open them

Are you having problems opening a F4F file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a F4F file?

The .f4f file extension is used for a proprietary data file format that was created by Adobe Systems, Inc. These F4F files are also called Adobe HTTP Dynamic Streaming segment files. Data files with the .f4f extension are generated by the File Packager applet, which is part of the Adobe HTTP Dynamic Streaming service.The Adobe HPPT Dynamic Streaming service is part of Adobe Media Server. This software is used for the distribution of multimedia content through HTTP connections.Segments of multimedia content are stored in these F4F files. These .f4f files are also known as Flash MP4 fragments.These .f4f files are not meant to be opened by multimedia players and video editing applications. It's recommended to leave these F4F files alone, in order for Adobe Media Server and the Adobe HTTP Dynamic Streaming service to continue working properly.

How to open F4F files

Important: Different programs may use files with the F4F file extension for different purposes, so unless you are sure which format your F4F file is, you may need to try a few different programs.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Last updated: December 12, 2010

Suggest another file format using extension F4F

While we know of one file format using the .F4F file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .F4F file.