Dll File Information
Filename: mpg4decd.dll
Version: 6.1.7100.0 (winmain_win7rc.090421-1700)
Filesize: 237KB
Description: Windows Media MPEG-4 Video Decoder
Download mpg4decd.dll

Installation instructions

Here is complete guide of mpg4decd.dll installation. Read it below and you will know where to put mpg4decd.dll.

Step one. Unzip mpg4decd.dll wherever you want.

Step two. Place mpg4decd.dll in \Windows\System32 (usually located at disk C) if you’re running 32 bit Windows. If you’are running 64 bit Windows, additionally place file in \Windows\SysWOW64.

Look at the System Type and what is listed next.
  • If you running 32-bit Operating System of Windows 7/8/8.1 you have this:
windows-32-bit
  • If you running 64-bit Operating System of Windows 7/8/8.1 you have this:
windows-64-bit

Step three. Reboot your pc.

If after rebooting you still getting mpg4decd.dll error, do the following:

  1. Press ‘Start
  2. Type ‘cmd‘ in search and press Enter.
  3. Type regsvr32 mpg4decd.dll and press Enter

After doing this restart your PC again and you will be no longer receiving mpg4decd.dll errors.

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A bit more about mpg4decd.dll…

mpg4decd.dll it is dynamic link library that is a part of Microsoft Visual C++ component. It is used by many modern games and programs: pes 2016,Gta 5, far cry 4, Sims 4, Arma 3, Battlefield 4,Watch Dogs,Pes 2013 Dragon Age: Inquisition and many more.

Usually mpg4decd.dll located at Windows\System32 if you are running Windows 32 bit. If you are running Windows 64 bit (doesn’t matter which one – XP, Vista, Seven or 8) copy of this file also located at Windows\SysWOW64.

If mpg4decd.dll is missing in one or both directories, program or game that uses this file cannot find it and cannot receive required data, so you get error like that:

The program can’t start because mpg4decd.dll is missing from your computer. Try reinstalling the program to fix this problem.

Of course, you don’t need to reinstall game or program. You just need to download mpg4decd.dll and install it properly to fix this error.