Variable change for Closed-captioning video

I have a couple of videos in one of my programs with Closed Captioning. In order for it to show, a mime type was added as noted in the manual. Our folks also said they had to change two variables on the videos:

var bFillWindow = t to =f

var bFitWidth = t to =f

Can I make this change in my program, so they don't have to modify my file?

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