How to set 1/50 shutter speed in crop mode (5x)

[theartofweb]

Hi,

  I can't seem to able to set the shutter speed at 1/50 when I select 5x crop mode. If I set the camera to 1/80 I'll see 1/54.89 (164°), the at 1/50 on camera it'll show 1/37.91 (237°) on Magic Lantern. Originally, I also had difficulties setting the correct frame rates as it would go from 25 in liveview mode to 29.97 in 5x crop mode.  I worked that out by setting 25.000 on FPS override (Exact FPS). I am shooting at 1280x720 and although ML says the speed will be at about 38.4 MB/s the actual speed is around 51 MB/s when I hit the record button, why is that?

Thanks