1D movies would have only one dimension. That is, it would be a line with no width. Would you watch such a movie? Of course not. So, although technically possible (actually quite easy to make) you won't see 1D movies entering cinemas near you, because it would not be profitable.
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When writing a movie review, one thing to consider is
Water Love you 1D
1D posters cost about the same everywhere. I get my posters from magazines, eBay (which is cheaper), and onedirectionmusic.com (which is their official site, but can be expensive after shipping from England)