Hello, I can do what you asking for, fast and clean.
But I must say you received a bad information about 300dpi video, if you display an HD picture on a 6.4-inch by 3.6 inch screen, it will display 300 dpi. If you show the same image on a HUGE outdoor screen -- let's say 160 ft. by 90 ft. -- you're looking at a 1 dpi picture.
It means 300dpi video is depending on screen size, not the animator.
If you have questions you can ask me.