The File Extensions Database

.F4M File Extension

  • Developer by: Adobe Systems
  • Category: Video Files
  • Format: XML

What is an .F4M file?

.F4M is Adobe Flash Media Manifest File

An F4M file is a data file saved in the Flash Media Manifest (F4M) format. It contains information that describes Adobe HTTP Dynamic Streaming (HDS), Real-Time Messaging Protocol (RTMP), and Real-Time Media Flow Protocol (RTMFP) streams to a video player.

Adobe HDS is used to deliver multi-bitrate audio and video content over HTTP to media players streaming the content. The F4M format was developed to support HDS by describing complex media that may contain several audio language tracks, multiple bitrate renditions, or advanced content protection, to the media players.

Although the F4M format was originally designed to support HDS, it has expanded to other transport schemes, such as RTMP and RTMFP. F4M manifest files contain information about the resolution, codec, and availability of multi-bitrate files.

F4M files are created by the File Packager tool, which is used for packaging content in Windows and Linux. The tool is available in the Flash Media Server rootinstall/tools/f4fpackager folder. When you package media to be streamed (File Packager only supports .F4V, .MP4, and .FLV files), the content is packaged into .F4F fragment files. The F4M file is also created, along with F4X Index files, in order to accompany the F4F files. Once the media is packaged, it is delivered by Adobe Media Server to client computers streaming the content.

Programs that open Adobe Flash Media Manifest File
Adobe Media Server
Adobe Media Server

How to solve problems with F4M files

  • Associate the F4M file extension with the correct application. On :
    Windows: Right click on any F4M file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.F4M files". Mac: Right click (or Ctrl-click) the F4M file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .F4M is Adobe Flash Media Manifest File. Because only the current version supports the latest F4M file format. Search, therefore, e.g. on the Adobe Systems manufacturer website after an available .F4M is Adobe Flash Media Manifest File update.
  • To make sure that your F4M file is not corrupted or virus-infected, get the file again and scan it with antivirus software.