@Prokopios make sure you enable MLV_Lite module, Crop_rec module & if you want sound mlv_snd from the 9th tab in the magic lantern than restart your camera. Enter magic lantern menu after restart switch liveview on than go to the 4th tab and enable crop mode / raw video options & lastly hit the zoom button to go into 5X mode. That"s it you should be good to go after that. Let me know if that works. Also here is a video breaking it down https://vimeo.com/217313287