Shooted using Raw video from Magic Lantern on Canon 600D at 1728x736 with 16fps and up it in post to 24fps 2500x1065. All shooted from hands and monopod.
Crop mode? What lens(es)? Nice results!
Without crop, just set aspect ratio of 2.35 for reduce the resolution, and down fps to 16. With this settings i can record 161 frame=7sec at 16fps.
Using canon 50mm 1.8, samyang 8mm f3.5 (bad lens for raw video on this camera) and canon 70-200 f4 L