I have same problem :
> x264
> AC3 or DTS
in a MKV file ( mux by MKVToolnix 1.6.5 )
video stream is a DVD anamorphic with just "top&bottom" crop ... no resize
> example : on a PAL DVD my AR is for example 1024*416 ( for an 720*416 video ) ... so I entry 1024*416 in AR when muxing ...
But since I have re-install my computer ( XP SP2 ), AR don't work anymore ... And this movies works in soon past ...
I use MPC + FFdShow and my aspect ratio is not used ...
... I thing I have last release of this tools ...
So what is needed t for AR works fine ???
I've read about "third state" in ffdshow ??? ... what about this ?!!