@bogdanm
Very easily explained, it's tvheadend running with nvenc cpu transcoding.
You get lower kb/s with the same image quality as FHD.
Set up to transcode nvenc gpu transcoding 4mb with "copy audio".
Works well with dm520 OE2.5, appltv, vlc but not with vu+ with Blackhole
The image itself is running too fast sometimes on vu+, and the image does not get 100%.