Does a video show a 1982 United States government program that was testing for "dimensional travel"? No, that's not true: The video is from a sci-fi filmmaker Kane Parsons. The footage is readily available on YouTube and is part of his series of found footage horror shorts titled "The Backrooms."
The claim appeared in a video (archived here) published on Instagram on December 28, 2023. It opened:
In 1982 there was a "gov program " that had a goal for dimensional travel this was the first test
It was deemed a success
This is what the post looked like on Instagram at the time of writing:
(Source: Instagram.com screenshot taken on Tues Jan 24 17:01:23 2023 UTC)
The video is footage from the YouTube channel of Kane Pixels (archived here). The Instagram page linked to the channel states that the user's real name is Kane Parsons (archived here). The creepypasta horror short is titled " Backrooms - Prototype." He also posted the video on his Instagram page in March 2022 here (archived here). The video posted on Instagram matches the YouTube video beginning at the 14-second-mark as this screenshot shows here:
(Source: Instagram.com screenshot taken on Tues Jan 24 17:15:33 2023 UTC)
... with the YouTube video here (archived here):
While the Oak Ridge National Laboratory (archived here) as mentioned on a slide in the video posted on Instagram is a real research center, Lead Stories could not determine whether the slide is a genuine notice from Oak Ridge or is in itself a fake.
Parsons, a teenager from Northern California, gained a large following on YouTube for his sci-fi series with millions of views for sci-fi horror-style footage. He released a film on the internet and has signed up to direct a feature film as the Los Angeles Times reported (archived here).