>> F4X file

F4X file format description

Many people share .f4x files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .f4x file can be edited, converted or printed with. On this page, we try to provide assistance for handling .f4x files.

1 filename extension(s) found in our database.

.f4x - Flash MP4 Video Index

The F4X multimedia files are related to Adobe Flash Player. F4X file is a Flash MP4 Video Index. F4X file contains the location of specific fragments within a stream. The F4V format is based on the format specified by ISO/IEC 14496-12: ISO base media file format.

Adobe Flash Player
Multimedia files
- / -
Flash MP4 Video Index related extensions:
Avid Log Exchange File
Graphical System for Presentation File
TCMP Playlist
Telerik Trainer Session
Camtasia Studio Recorded Video

Naturally, other applications may also use the .f4x file extension. Even harmful programs can create .f4x files. Be especially cautious with .f4x files coming from an unknown source!

Can't open a .f4x file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .f4x file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

f4, f4a, fex, frx, ftx, fx, fx4

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Visual FoxPro Report
WinDev HyperFileSQL Full-text Index
Microsoft DirectX D3D Effect
Fortran IV Source Code
Fugawi Raster Map
Adobe Flash MP4 Audio Stream

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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