I am trying to say that I chose to make an explanation video and that I annotated a copy of the file. But something seems odd about the sentence below. Should there be a comma after video, and then something different about what comes after? I feel like the word annotate is throwing me off, because if it wasn't there and I was simply making a copy of the file, then the sentence would be fine.
"That is why I have chosen to make the explanation video and annotate a copy of the file."