Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\.mkv]
@="MatroskaVideo"
"Content Type"="video/x-matroska"
"PerceivedType"="video"

[HKEY_CLASSES_ROOT\.mka]
@="MatroskaVideo"
"Content Type"="audio/x-matroska"
"PerceivedType"="audio"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Multimedia\WMPlayer\MIME Types\video/x-matroska]
@="MatroskaVideo"
"UserApprovedOwning"="yes"
"Extensions.SpaceSep"=".mkv"
"Extensions.CommaSep"="mkv"
"Extension.Key"=".mkv"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Multimedia\WMPlayer\MIME Types\audio/x-matroska]
@="MatroskaVideo"
"UserApprovedOwning"="yes"
"Extensions.SpaceSep"=".mka"
"Extensions.CommaSep"="mka"
"Extension.Key"=".mka"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Multimedia\WMPlayer\Groups\Video\mkv]
@="MatroskaVideo"
"Description"="Includes files with .mkv extensions."
"Extensions"=".mkv"
"FriendlyTypeName"="Matroska Media File"
"MIME Types"="video/x-matroska"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Multimedia\WMPlayer\Groups\Audio\mka]
@="MatroskaVideo"
"Description"="Includes files with .mka extensions."
"Extensions"=".mka"
"FriendlyTypeName"="Matroska Media File"
"MIME Types"="audio/x-matroska"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Multimedia\WMPlayer\Extensions\.mkv]
"Permissions"=dword:0000000f
"UserApprovedOwning"="yes"
"Runtime"=dword:00000007
"PerceivedType"="video"
"MediaType.Description"="Matroska Media File"
"Extension.Handler"="MatroskaVideo"
"Extension.MIME"="video/x-matroska"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Multimedia\WMPlayer\Extensions\.mka]
"Permissions"=dword:0000000f
"UserApprovedOwning"="yes"
"Runtime"=dword:00000007
"PerceivedType"="audio"
"MediaType.Description"="Matroska Media File"
"Extension.Handler"="MatroskaVideo"
"Extension.MIME"="audio/x-matroska"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MediaPlayer\Player\Extensions\Descriptions]
"819"="Matroska Media File (*.mkv;*.mka)"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MediaPlayer\Player\Extensions\MUIDescriptions]
"819"="Matroska Media File"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MediaPlayer\Player\Extensions\Types]
"819"="*.mkv;*.mka"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MediaPlayer\MLS\Extensions]
"mkv"="video"
"mka"="audio"