-> found a bug and I got a 'guess' what happend on your last encode.
You enabled crop (no source loaded and AutoCrop disabled)
-> Hybrid set crop values to 48:48:0:0
You enabled resize (to 720x...)
You loaded the source.
-> since crop was enabled, but AutoCrop not, Hybrid assumed you wanted to take the first 48x48 pixels of your source and resize it to something with 720x... (which ended up as: 720x...)
so what you see are the first 48x48 pixels of your source.
No bug in Hybrid there, but I found another small bug, when en-/disabling the gui.
Will send you a fixed version for testing.
Cu Selur