Hey Morgan,
Sorry, I don’t think that with the still only; it is going to be possible to give a meaningful answer.
But as a rule of thumb, you are unlikely to get anything exact if the original idea has used the word “random” in the expression.
Unless you want to overlay your letters on the original video, using a tracker?
Then obviously remove or replace the original video.
Hope that this helps?
Atb
Mads