Export in .swf change aspect ratio?

I created an animation in toon boom animate pro 2. My video supposed to be in 16:9 aspect ratio, but when i export it out in .swf It changes the video’s aspect ratio. Is there a way to fix this? when i export my video as a movie. the aspect ratio remains the same. Please help

The thing about the .swf format is that it doesn’t crop the image - it’s just the nature of .swf. It keeps all of the drawings whole, and just bounds those drawings in a box. It depends on what viewer you use to see what is going to show up inside the viewer box. How are you viewing your swf? Are you opening it up directly in an internet browser? Or are you opening it in a swf player?