Yeaaah, man.. I just love those tiny little hints, Audiboxer, which turn your mind on, to figure out a solution. I've got a winner now.
I said to myslef, to hell with WMC, let me use WMP12 on PC to send streaming signal to XBOX360 (not from WMC on XBOX360 to recieve it). When XBOX360 is configured as Extender to WMC and turned on, WMP12 lets you use command "right click to video / Play to / XBOX360".
I've found Advanced settings in WMP12: Left Alt / Tools / Options / Devices / Advanced
You may see that there is the first checkbox checked by default "Allow video files to convert in the background". All you have to do is to uncheck this setting. Video goes to Extender in a second, without buffering (if converting is enabled, buffering takes some time).
I've tested the fourth checkbox also "Choose quality over speed when converting video (increases the conversion time)" while having first one checked also --> result was also good, bot the processor was quite busy this time, so I preffer disabling converting at all and having processor not busy.
Note: Of course, don't forget to get Haali Media Splitter for Matroska (MKV) installed (or any other solution), so WMP12 may recognize this kind of video container any play it (no need for extra x.264 decoder/codec though, because Windows 7 already have it).
Hope this helped someone!








