This site is about gifs. They are inyected as videos with infinite loop, simultaing a gif (performance trick). The template shouldn't insert it as non-loop video.
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My template handles it better: https://instantview.telegram.org/contest/vayagif.com/template7/?url=http%3A%2F%2Fwww.vayagif.com%2F38376%2Fel-senor-burns-no-tiene-vecinos