What is mencoder.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the mencoder.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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Mencoder.exe file information

The process known as Dispatcher for FFmpeg transcoding belongs to software MediaCoder or CloneDVD mobile or PS3 Media Server or Free DVD Ripper or MCEBuddy or Replay Converter by Tyrell or SlySoft (

Description: Mencoder.exe is not essential for the Windows OS and causes relatively few problems. The mencoder.exe file is located in a subfolder of "C:\Program Files". Known file sizes on Windows 8/7/XP are 13,179,660 bytes (44% of all occurrences), 7,949,824 bytes and 8 more variants. 
It is not a Windows core file. There is no information about the author of the file. The program is not visible. Therefore the technical security rating is 47% dangerous, however you should also read the user reviews.
If problems with FormatFactory or PS3 Media Server come up, you may want to do the following:
  1) uninstall it from your computer using the Control Panel applet "Add/Remove programs"
  2) contact Customer Service [1][2].

Recommended: Identify mencoder.exe related errors

If mencoder.exe is located in a subfolder of "C:\Documents and Settings", the security rating is 56% dangerous. The file size is 3,952,128 bytes (66% of all occurrences) or 7,949,824 bytes. There is no information about the author of the file. The program has no visible window. The file is not a Windows system file.

Important: Some malware camouflages itself as mencoder.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the mencoder.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

This process is used by the program Mediacoder to encode audio/video files. It is completely harmless and will only be used when accessed thru Mediacoder.
  Andy   (further information)
Bestandteil des Any Video Converters
i have aviconverter and that is what it uses
mencoder 1.AVI -ovc x264 -x264encopts qp=24 -oac lavc -lavcopts acodec=ac3:abitrate=192 -o 2.avi
It is the encoder for "Format Factory" converter program
  Druid Bard  
mencoder.exe runs when "formatfactory" is running.. Maybe it is used during video conversion.
My file is 9544704bytes and resides in folder C:\Program Files (x86)\Common Files\DVDVideoSoft\Dll - it seems to be part of the "Free Studio manager" video file conversion utility. Elsewhere it may be released under GNU licese, but that may not be correct as the file sizes I've found have been different.
  Harry   (further information)

  a passer-by   (further information)
codec belongs Format Factory audio video converter
Mencoder is automatically started when I run a movie on my playstation with PS3 Media Server
Clone DVD 5 uses it, and I get the crappy Microsoft error message that mencoder.exe has reported a problem.
It is the extension used during file conversion in the program "Any Video Converter"
also belongs to PS3 Media Server Software
  kai   (further information)
mencoder.exe belongs to various video format decoder/encoder. Mencoder gehört zu diversen Video-Wandlern. For example/z.B.: Format Factory
Shows up when i use "FLV to MP4 converter" ... seems to be harmless other than the VERY HIGH CPU usage during file conversion
it belong to anyvideo converter
For Any Video Converter
Mpeg encoder used by FormatFactory
  Michael G  

Rating chart

Summary: Average user rating of mencoder.exe: based on 24 votes with 18 user comments. 10 users think mencoder.exe is essential for Windows or an installed application. 8 users think it's probably harmless. 6 users think it's neither essential nor dangerous. 4 users don't grade mencoder.exe ("not sure about it").

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Best practices for resolving mencoder issues

A clean and tidy computer is the key requirement for avoiding problems with mencoder. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off doing a repair of your installation, or in the case of Windows 8, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the mencoder.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

mencoder.exe [all]