We recognize as part of system, that not only are courts fallible, they are subject to review by higher jurisdictions for corruption, error and violation of other laws.
In your not so humble opinion the court was wrong.
Prove it. Make a case demonstrating how the court was wrong. Not maybe's, perhaps, or other opinions, but with factual evidence. And apparently the video won't do, because the court has already ruled against it and you don't know why. Pursuant to our judicial system's criminal parameters, innocent until proven guilty, an acquittal is an affirmation of innocence.
So present a case for appeal of the decision and judgment, or one that makes a case in the Federal jurisdiction based upon federal applicable law(s) that would lead to a conviction of some sort against the shooter. Those are your real options. Use them, fulfill them, or you have nothing other than whining positions to offer.
Are you an attorney, and if so or not, what kind of court did you present that argument to? Was it a criminal court, usually a state supreme court, or was it a small claims case, landlord tenant, or any other court geared toward protecting the consumer, and doing so often with an unfair hand? Were you pro ce in a matrimonial/family court? Do tell. I do have a sense of humor.