У вашего броузера проблема в совместимости с HTML5
Made in PD8, but applies equally to PD9 - this micro-toot shows how to set basic key frames in Motion Designer.
In another tutorial about Magic Motion (in PD10) http://youtu.be/weqXryu10mA you can see the effect of zooming in too far... watch the opening & closing sections. The image used was 14980x8426 - still generated BLURRING!