Oh, sorry. I hadn't noticed you were talking about HD and not 4K because there was nothing in your first message (where there are usually the infos about the issues a user encounters) and, above all, because in my satellites (13°E, 19,2°E and 28,2°E) there are NO channels which are HD and H265. Every H265 ones I had seen so far were all 4K.
So my question is: have you tried to grab pictures from 4K channels?
And also: I see that the 16°E HD H265 channels are all encrypted: my suspect is that your problem has nothing to do with the H265 but with the decrypting. If you can grab from 4K H265 FTA channels, this would be (in my opinion) a confirm of my hypothesis.