MPEG-2 Video, .m2v, Transport-Streams

I have searched through all of the Forum but still no solution.
Like many people here I have QT PRO (on Leopard) and the MPEG-2 Playback Codec (Version 6.4.1) installed. When I record from TV via Cable or DVB-T I always get a MPEG-2 Transport Stream. I know how to handle these and I know how to convert them. My question is regarding the Finder Preview Issue.
When you have selected in Finder to show the Preview of a file it will go for a long cup of coffee when it comes to selecting a .m2v or MPEG Transport Stream file, i.e. the Finder crashes. This is a phenomina since QT 7. Apple promised a better handling of .m2v for the 10.3.9 Update but I cannot see any changes.
I don't need to preview those files if it is not supported. This would be nice to have but I don't really need to. Is there anyone out there who can tell me how to
1) prevent Finder Preview from crashing or
2) get this to work
I tried some hints from here like re-associating .m2v with the Quicktime Player but it didn't resolve my Issue. Is there maybe someone from Apple reading this and being able to help out?
Many thanks in advance.

Like many people here I have QT PRO (on Leopard) and the MPEG-2 Playback Codec (Version 6.4.1) installed. When I record from TV via Cable or DVB-T I always get a MPEG-2 Transport Stream.
I may be wrong, but I don't believe "true" transport streams have ever been supported by the QT MPEG-2 Playback component and, by extension, would not be supported by either the Finder Preview or QuickLooK.
When you have selected in Finder to show the Preview of a file it will go for a long cup of coffee when it comes to selecting a .m2v or MPEG Transport Stream file, i.e. the Finder crashes.
M2V/AIFF elementary stream files, "muxed" MPEG (MPEG2/MP2 or MPEG2/MP1), and MOV (MPEG2/any compatible audio) all play fine for me in both the Finder Preview and QuickLook. The only problem are VOBs whose video content play fine in the QT Player but have to have their extension changed to MPEG to play in either the Finder Preview or QuickLook. Frankly, I am unable to duplicate your problem except for "true" MPEG-2 Transport Streams, which, as I previously said I don't believe have ever been QT compatible.

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