Location of Windows NT Multimedia Drivers in the Registry (126054)

MORE INFORMATION

The Registry Editor looks similar to SysEdit. The Registry windows are labeled as follows:

HKEY_LOCAL_MACHINE

This contains information about the local computer system, including hardware and operating system data such as bus type, system memory, device drivers, and startup control data.

HKEY_CLASSES_ROOT

This contains OLE and file-class association data (equivalent to the registry in Windows for MS-DOS).

HKEY_CURRENT_USER

Contains the user profile for the user who is currently logged on, including environment variables, personal program groups, desktop settings, network connections, printers, and application preferences.

HKEY_USERS

Contains all actively loaded user profiles, including HKEY_CURENT_USER, which always refers to a child of HKEY_USERS, and the default profile.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers

Contains VIDC options, SndEvnts, Wave, and Timer drivers. It is similar to the [drivers] section in the SYSTEM.INI file.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows

NT\CurrentVersion\drivers.desc

Shows installed drivers and the associated name. For example, iccvid.dll:REG_SZ:Cinepak Codec by SuperMatch. It is similar to the [drivers.desc] section in the CONTROL.INI file.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32

Contains the 32-bit drivers associated with wavemapper, wave1 and wave2, msacm.imaadpcm, .msadpcm, .msgsm610, and vidc. Similar to the [drivers] section in the SYSTEM.INI file.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\MCI

Contains the 16-bit sound drivers. Similar to [mci] section of the SYSTEM.INI.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\MCI

Extensions

Similar to the [mci extensions] section in the WIN.INI file.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\MCI32

Contains 32-bit mci drivers. For example, CDAudio:REG_SZ:mcicda.dll.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Midimap

Contains the name of the MIDI Synth driver.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\

CurrentVersion\Userinstallable.drivers

Indicates which wave channel the sound card uses.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\WOW

Options for 16-bit Windows applications running under Windows NT.

NOTE: These settings should be maintained only by the system.

HKEY_CURRENT_USER\Software\Microsoft\Multimedia\Audio Compression

Manager\NewPriority

Contains driver priority settings from Sound Mapper.

HKEY_CURRENT_USER\Software\Microsoft\Multimedia\MCIAVI

Contains video playback options. For example, "Zoom by 2", and "Skip Video Frames if Behind."

HKEY_CURRENT_USER\Software\Microsoft\Multimedia\msacm.imaadpcm

Contains the encode and decode rates set in Control Panel, Drivers, for IMA ADPCM.

HKEY_CURRENT_USER\Software\Microsoft\Multimedia\msacm.msgsm610

Contains the encode and decode rates set in Sound Mapper.

HKEY_CURRENT_USER\Software\Microsoft\Multimedia\Sound Mapper

Contains the settings from the Sound Mapper Sound Device Preferences.

HKEY_CURRENT_USER\Software\Microsoft\Multimedia\Sounds

Contains the Sound Events settings.

HKEY_USERS\S-1-5-...\Software\Microsoft\Multimedia\Audio Compression

Manager \NewPriority

Contains driver priority settings from Sound Mapper.

HKEY_USERS\S-1-5-...\Software\Microsoft\Multimedia\MCIAVI

Contains video playback options. For example, "Zoom by 2", and "Skip Video Frames if Behind."

HKEY_USERS\S-1-5-...\Software\Microsoft\Multimedia\msacm.imaadpcm

Contains the setting from Sound Mapper. Valid settings for MaxRTDecodeSetting and MaxRTEncodeSetting are:

   0--      No rates.
   0x1--   8000 Hz mono.
   0x2--   11025 Hz mono.
   0x3--   8000 Hz stereo.
   0x4--   22050 Hz mono / 11025 Hz stereo.
   0x5--   44100 Hz mono / 22050 Hz stereo.
   0x6--   All rates.
				

NOTE: It is possible to manually adjust these values from the Registry Editor.

HKEY_USERS\S-1-5-...\Software\Microsoft\Multimedia\msacm.msgsm610

Contains the setting from Sound Mapper. Valid settings for MaxRTDecodeSetting and MaxRTEncodeSetting are:

   0--      No rates.
   0x1--   8000 Hz mono.
   0x2--   11025 Hz mono.
   0x3--   22050 Hz mono.
   0x4--   44100 Hz mono.
   0x5--   All rates.
				

NOTE: It is possible to manually adjust these values from the Registry Editor.

HKEY_USERS\S-1-5-...\Software\Microsoft\Multimedia\Sound Mapper

Contains the settings from the Sound Mapper Sound Device Preferences.