How to Install and Remove Codecs and MCI Devices in Windows

Last reviewed: June 23, 1998
Article ID: Q142731

The information in this article applies to:
  • Microsoft Windows 95
  • Microsoft Windows 98

SUMMARY

This article describes how to install and remove codecs and Media Control Interface (MCI) devices in Windows.

MORE INFORMATION

Codecs are used to play compressed files by decompressing them in memory. Adding a specific codec lets you play files compressed in that file format. Removing and reinstalling a codec may solve problems playing a particular file type.

MCI devices are drivers that provide Windows-based programs device- independent capabilities for controlling multimedia hardware and software. Removing and reinstalling MCI devices may solve problems playing certain files.

Adding All Default Codecs <- DO THIS

To add all the default codecs in Windows, follow these steps:

  1. In Control Panel, double-click Add/Remove Programs.
  2. On the Windows Setup tab, click Multimedia, and then click Details.
  3. Click the Audio Compression and Video Compression check boxes to select them, and then click OK.
  4. Click OK.

Adding a Specific Codec or MCI Device

To add a specific codec or MCI device, follow these steps:

  1. In Control Panel, double-click Add New Hardware.
  2. Click Next, click No, and then click Next.
  3. In the Hardware Types box, click Sound, Video, And Game Controllers.
  4. Click a manufacturer in the Manufacturers box and a model in the Models box, and then click Next.

    The following table lists the codecs included with Windows:

          Manufacturer             Model
          ----------------------------------------------------------------
          DSP Group                TrueSpeech Software Audio Codec
    
          Intel                    Indeo R3.1 Video Codec
                                   Indeo R3.2 Video Codec
    
          Microsoft Audio codecs   ADPCM Audio Codec
                                   CCITT G.711 A-Law and u-Law Audio Codec
                                   GSM 6.10 Audio Codec
                                   IMA ADPCM Audio Codec - WeirdV.avi uses this codec
    
          Microsoft Video codecs   RLE Video Codec
                                   Video 1 Video Codec
    
          SuperMatch               Cinepak Video Codec
    
       NOTE: Microsoft PCM Converter is installed by default.
    
       For MCI devices, click Microsoft MCI in the Manufacturers box, click
       the model you want in the Models box, and then click Next.
    
       The following MCI devices are included with Windows:
    
          CD Audio Device
          MIDI Sequencer Device
          Motion Video Device
          PIONEER LaserDisc Device
          VISCA VCR Device
          Wave Audio Device
    
       If the codec or MCI device you want to install is not listed, it was
       not installed by Windows. If the codec or MCI device was included
       with another program, reinstall the program to reinstall the codec or
       MCI device. If the codec or MCI device is located on a driver disk,
       click Have Disk and specify the location containing the files. If
       Windows 98 finds a codec or MCI device, click No to add the device to
       the list of installed devices.
    
       NOTE: Unlike the other MCI devices, the Mixer Device cannot be added
       manually. This device can be added only during the installation of a
       Windows-compatible sound card driver. When it is installing the
       driver, if Windows determines that the driver can support the Mixer
       Device, it installs the Mixer Device along with the sound card driver.
    
  5. Click the Finish button.

Removing the Default Codecs

To remove the default codecs, follow these steps:

  1. In Control Panel, double-click Add/Remove Programs.
  2. On the Windows Setup tab, click Multimedia, and then click Details.
  3. Click the Audio Compression and Video Compression check boxes to clear them, and then click OK.
  4. Click OK.

The default codecs, with the exception of the Microsoft PCM converter, are removed. You cannot remove the Microsoft PCM converter.

Removing a Specific Codec or MCI Device

To remove a specific codec or MCI device, follow these steps:

  1. In Control Panel, double-click Multimedia.
  2. Click the Advanced or the Devices tab.
  3. To remove an audio codec, double-click Audio Compression Codecs, double-click the codec you want to remove, and then click Remove.
  4. To remove a video codec, double-click Video Compression Codecs, double-click the codec you want to remove, and then click Remove.
  5. To remove an MCI device, double-click Media Control Devices, double- click the device you want to remove, and then click Remove.