Large still panorama in cs6 video clipped on ends

Windows 7  and PS CS6.  I am trying to use the motion effect "PAN"  in PS CS6 but the image is large.  7364 x 1080.  It pans but clips the ends.  The image in the timeline has a slider at the bottom, I take that to mean the image is to wide for the video frame.  How can I use the pan effect in PS cs6 to pan a large panorama ??  I tried splitting the image but the seperate images are not a smooth single image.

initial image was 1.93 gigs as a 16 bit tiff,  converted to jpeg 7364 x 1080. 

Thanks