I've heard that it works in Kodi, not in basic TV app.
Also you have to install openelec-kodi-tvheadend and then you'll be able to run Oscam or Cccam there. In Kodi you have options to choose codec, and other things, interlaced/deinterlaced...you have to find way to watch 422.
I'm not speaking it from my experience, that told me users of K1 Android boxes.
It's little odd that noone is able to make linux/E2 codec/support for 422, for decade now, it's not some new issue it lasts for long time. I remember I couldn't play mpeg4 , then .avi on first enigma boxes, but after some time it was supported, only format that noone care and developing is 422....