Well, here are my preservation files, used for the video I uploaded on YouTube some time ago and now no longer available. They are all sourced from various VHS (I have several, original and copies), and for each one I tried to select the best source, sometimes mixing differnt parts coming from different sources. I also did some video adjustment and color crrection but the final result is still bad.
Reel 0: excerpt from the “Star Trek 25th Anniversary Special” (includes scenes from reels 1-2-3-4)
http://www.marcellorossi.info/Blooper0.mp4
Reel 1: first part of the first season, probably made for 1966 Christmas holiday’s party
http://www.marcellorossi.info/Blooper1.mp4
Reel 2: full first season, includes scenes from reel 1 and the happy birthday video for Roddenberry’s wife Eileen at the end
http://www.marcellorossi.info/Blooper2.mp4
Reel 3: second season
http://www.marcellorossi.info/Blooper3.mp4
Reel 4: third season, includes scenes from reels 1 and 3
http://www.marcellorossi.info/Blooper4.mp4
Reel 5: compilation of reel 1-2-3 with better quality, released on VHS within the documentary “Forty Years of Science Fiction Television Featuring: Star Trek”
http://www.marcellorossi.info/Blooper5.mp4
EXTRAS
Outtakes compilation
http://www.marcellorossi.info/Outtake.mp4 (no audio)
Scene 29D: unused take from “Whom Gods Destroy” released on startrekhistory.com website (http://startrekhistory.com/article2.html)
http://www.marcellorossi.info/UnusedTake.mp4 (no audio)
Dailies from “The Cage”. Released on startrekhistory.com website (http://startrekhistory.com/cagepage.html), those were used on the “E! Mysteries & Scandals” Jeffrey Hunter documentary (http://www.imdb.com/title/tt0567719/), I suppose they were in possession of Hunter’s family
http://www.marcellorossi.info/TheCage.mp4 (no audio)
Audio bloopers
http://www.marcellorossi.info/AudioBloopersLP.zip
According to my research, this is all the behind the scenes material available, aside from the official releases (“Billy Blackburn’s Treasure Chest” and the wonderful Roddenberry Vault boxset).
By the way: I don’t seem to be able to access FanFiltration video (https://youtu.be/V5g5GoRSfMc), YouTube says it’s private.