From Homestar Runner to Salad fingers to badgers, stick figure battles, and the End of Ze World, this — dare I call it an artform? — was a cultural touchstone for a generation.
Flash made vector animation available to the masses, and internet distribution of the relatively small video files was a piece of cake. With the filetype now essentially deprecated, the creators gone on to bigger and better things, the distribution sites shut down, it is a dead form. Most of it will be lost forever, although there may be someone archiving some of it for posterity.
What content was released on beta that wasn’t released on vhs or later on DVD or something else?
I don’t think it’s comparable at all.
First hit on Google was this list made by some Redditor: https://www.reddit.com/r/Betamax/comments/z8cun4/films_that_only_exist_on_betamax_or_alt_editions/
In any case: the big advantage of Betamax (and VHS) was how easy it was to get home-recordings done. An entire generation of family photos / family events (birthday parties, etc. etc.) are on Betamax and likely lost.
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