I want to use the extreme render bit the thumbnails are with wrong resolution.
I tried different containers (mkv, avi, mp4) and codecs (x.264, xvid), all videos 1280x720, but they all come as 720x720.

I have no such issues with engine 1, engine 2 and crystal.



I'm not sure if the problems is with my codecs or extreme render. Can you help me?