[NicCo]

Sorry, I did misread.

Signalling to a TV to switch to 3D is a black art it would seem.

I don't particularly like the addons that simulate keypresses myself, as they rely on the TV dialog coming up in a particular state and that assumption may be wrong.

If you send a properly frame packed signal, the TV should switch. However what RPi does that sets it apart from most PC hardware is a mystery to me.

No problem and thank you for your response.
My MKVs have framepacked flag inside container and I use also framepacked option in x264 when I encode my movies and when I use these MKVs directly on TV, auto switch is OK so I think it's OK with file.
You think my TV should switch with XBMC on Windows OS ? Is there any setting to force it ?