It would help if YouTube would allow support for 480p60 (and the related 480p59.94), so as not to have to upscale the video to gain access to 60fps (the only way to do that with high fidelity and accuracy to the original video is to nearest-neighbor scale to 960 or 1920 lines, do an interpolated scale to double or quad width, then pad with black to 1080p or 2160p, depending on whether you are fine with 1080p or want the potential additional bitrate available to 4K videos).
Edit: I found a much better preservation of the video here - https://youtu.be/PpNXVctR9G0
If a mod could switch out the URL that'd be much appreciated
https://discreetfx.com/documents/NewTekVideoToasterDeveloper...
I remember using this thing when I was a kid, trying to figure out how all the switching effects worked, so stumbling on this manual many years later was really satisfying...