Some more detailed info:
Mencoder proces starts correctly, at about 30-40% CPU load. filling the transcoder buffer. But after about one minute Mencoder switches to 25% CPU load, which isn't enough to keep the buffer level, so the buffer gets less and less, till it stops. How to prevent Mencoder from lowering down to 25% CPU load?
And how can PS3MS remember where the playback of the DVD was, even after restarting the Http server?
I also move Mencoder from place 1 to place 2, made no difference,
Now I moved TS muxer to the top, but even that doesn't make a difference.
It's still the Mencoder.exe which is started, an lowers to 25% as mentioned above.