The Biden campaign recently released an ad mocking President Trump for the lack of respect shown to him by world leaders. The ad uses clips of Trump addressing the United Nations General Assembly on September 25, 2018. Trump boasts: “In less than two years, my administration has accomplished more than almost any administration in the history of our country.” Someone in the crowd appears to laugh or react in some manner, and Trump responds directly to that individual with "so true." There is an awkward pause and as Trump smiles and as some laughter builds, he says, "Didn't expect that reaction, but that's OK," and the audience then laughs loudly and some applaud.
Trump himself has come under fire for tweeting "doctored" video in the past, as well as for various photoshopped images.