From Another forum:
MKV AND TS With matroska
h.264 codec incl. thumbnails in vista and integration with VMC:
Download Haali Media splitter :
http://haali.cs.msu.ru/mkv/MatroskaSplitter.exe
Just leave the defaults on in the installation screen - make sure "explorer integration" is selected - this enables thumbnails.
For TS and PS MPEG files - add the selections in the install dialog
Enabling ts and mkv files in VMC and Mediaplayer do the following:
Open notepad and paste the following in:
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\.mkv]
@="MatroskaVideo"
"PerceivedType"="video"
"Content Type"="video/x-matroska"
[HKEY_CLASSES_ROOT\.ts]
@="MatroskaVideo"
"PerceivedType"="video"
"Content Type"="video/x-matroska"
Save the file as : matroska.reg to the desktop afterwards doubleclick it and say YES to add it to the registry.
You can now see and play TS and MKV files in VMC
MKV AND TS With Matroska and CoreAVC (the best!! but not free)
Use together with ffdshow (with h.264 disabled in Video configuration)
The same as above but add the following instead:
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\.mkv]
@="CoreMedia.MKV"
"PerceivedType"="video"
[HKEY_CLASSES_ROOT\.ts]
@="MatroskaVideo"
"PerceivedType"="video"
"Content Type"="video/x-matroska"
Save the file as : matroskaCore.reg to the desktop afterwards doubleclick it and say YES to add it to the registry.
You can now see and play TS and MKV files in VMC