“So, I finally managed how to author a simple blu-ray disc from Compressor. But, for some reason I cannot figure out how to burn the Blu-Ray disc from video/audio that is already encoded… It seems it needs to do the whole thing in one go; start the encoding in compressor, and then from the Inspector window / Job Action Tab, I should choose “create Blu Ray Disc, when encoding is done…”
It’s a one shot thing. You need Toast or Encore to author any other way.