video_grabber = FBVideoGrabber()
grab_time = FBTime(0,0,0,start_frame)
grab_time_next = FBTime(0,0,0,start_frame+1)
two_frame_step = FBTime(0,0,0,2)
video_grabber_option = video_grabber.GetOptions() # type:FBRenderOptions
video_grabber_option.TimeSpan = FBTimeSpan(grab_time,grab_time_next)
video_grabber_option.TimeSteps = two_frame_step
video_grabber_option.OutputFileName = save_path
FBApplication().FileRender(video_grabber_option)
the code upside will show render window,my file is a skeleton-only animation file ,and when i use RenderSnapshot method I will get a empty thumbnail without skelenton.How to hide Render when rendering thumbnail window using python motionbuilder api?