First please let me make one correction: The title contains an error. The prosecutor tried to play a video on an iPad, not an iPhone in court.
I understand that this is a highly politicized incident. Whichever side you are on, I would like you to pay attention to the technical issues concerning the admissibility of digital images as legal evidence, as well as technical advances in this field. Video images are routinely submitted in vehicle accident cases, domestic violence cases, workplace injury cases and more. It is quite impossible to imagine a court which does not admit them. Also please consider the fact that some subscribers of this mailing list reside outside the United States. Newspapers and TV news programs of Japan, where I live in, reported the Black Lives Matter protests. But they are not following the criminal trial currently in progress. I am aware of this issue because I pay far more attention to international news than my fellow countrymen. As such I believe that there are list subscribers from outside North America who would not have noticed the technical issues debated in the trial through the news channels they ordinary follow. I'll write a reply to the comments by Mr. Kaz Kylheku within a few days.