Some things that I seem to remember is that the guy had a Apple Duodisk Drive hooked up to the computer &, due to Drive 1 in the Duodisk not working, he had to open up the Duodisk & rewire Drive 2 to be Drive 1 & that he used them to check out some old floppy disks that had some old Applesoft BASIC programs that he wrote back in the 1980's.
He also, in one part of the video, used a graphics program to make a dot appear onscreen.
I also seem to remember the guy mentioning, in the beginning of the video, that he had just pulled the computer out of his closet.
I first saw the video sometime, I believe, between 2013-2015, although the video may have been from as far back as 2009.
I've tried searching for it on YouTube, including using search modifiers, but haven't been able to find it.
I am pretty sure that the channel that I saw it on was a small tech channel & not one of the bigger tech channels.