That extended ROTJ duel footage would be so cool if it’s possible to bring close to the quality of the theatrical footage! The duel has always felt very short, although I like the rhythm it’s cut to other action in the end of the movie.

What is your source for it? I found The Evolution of The Lightsaber Duel- documentrary on Vimeo. One of the problems is that the doc footage seems to be interlaced, meaning the footage has horizontal black lines. It doesn’t look interlaced on the drive link you posted though… Maybe there is some kind of AI aided software that can turn interlaced to progressive footage.

Also for the bigger detail n footage, maybe ask bryantmh for help, he did an awesome job on Prequel deleted scene AI upscales:
https://originaltrilogy.com/topic/ai-upscaling-of-deleted-scenes-and-other-content-released/id/75020/page/1

If you still have problem with masking using the Saber- plugin, try making Adjustment layers and putting the effect on that? I have used the Saber- plugin but only to punch up some shots in the Phantom Menace- lightsaber fight. The problem is that the plugin has no way to make saber’s blade tip pointy. It just looks that the blade has been cut of from the top. Or maybe I just haven’t found all the plugin settings… The better result may be to hand animate the tip glow on sabers and do the most of work with Saber- plugin.

Anyway, very cool project! I would like to have a link to ANH please!