No. Saying a video is a deepfake does not, by itself, get it thrown out. In October 2026 the Iowa Supreme Court held in State v. Amyda that the trial judge did not abuse his discretion in admitting a cellphone video, and that the defendant's "mere speculation" that it was a deepfake was not enough to bar it. The court found nothing in the record that raised a genuine question about the video's authenticity.
What happened in State v. Amyda?
The case involved a sexual-abuse conviction. In May 2023, a woman the opinion calls Clara (a pseudonym) spent an evening drinking with Max Amyda at her sister's house. They ended up in the bedroom she was using. She refused his advances and fell asleep fully clothed. The next day, nothing seemed wrong.
About a month later, Clara's sister forwarded her a video of about a minute. It showed Clara asleep on her back in that bedroom while a man's hand abused her. It looked as if the person holding the phone had filmed it at close range. Clara recognized the hand as Amyda's because of a tattoo. She went to police the next morning. When she had tried to ask Amyda about the video, he had blocked her.
The police never got a warrant for Amyda's electronic devices, and the officer could not trace where the video came from. Amyda was charged with third-degree sexual abuse. A jury found him guilty. The trial court imposed a ten-year indeterminate prison sentence and a special sentence of lifetime parole. The Iowa Court of Appeals affirmed, and the Iowa Supreme Court granted further review and affirmed too (official opinion, Iowa Supreme Court, filed October 9, 2026).
Did the court say a deepfake claim can never block a video?
No. The court did not go that far. It decided that this defendant, on these facts, offered only "conjecture." The opinion says the district court "did not abuse its discretion" in admitting the video, and that "the defendant's mere speculation that the video was a deepfake was not enough to bar its admission."
Abuse of discretion is a deferential standard. An appeals court does not ask whether it would have ruled the same way. It asks whether the trial judge's decision was clearly untenable or unreasonable. So the ruling says the trial judge was allowed to admit this video. It does not say every judge must admit every video that looks real.
All the justices joined the opinion by Justice Mansfield. There was no separate concurrence or dissent. It is a decision of Iowa's highest court on Iowa's own evidence rules, and it affirmed the conviction and sentence.
What does authentication mean?
Authentication is the first hurdle for any exhibit. Before a jury sees a photo, a video, a text message or a document, the side offering it must show it is what that side says it is. Iowa Rule of Evidence 5.901(a) puts it this way: the proponent (the side offering the item) "must produce evidence sufficient to support a finding that the item is what the proponent claims it is" (Iowa Court Rules, chapter 5).
The bar is not high. The judge does not have to decide the video is genuine. The judge decides only whether there is enough evidence to support a finding that it is. The jury then weighs the video along with everything else. The court noted that the State did not have to prove the video was probably genuine to get it admitted, but as a practical matter it still had to convince the jury beyond a reasonable doubt that the video was legitimate in order to win a conviction.
Rule 5.901(b) gives examples of acceptable proof. They are "examples only," not a complete list. One is testimony from a witness with knowledge. Another, rule 5.901(b)(4), is the "appearance, contents, substance, internal patterns, or other distinctive characteristics of the item, taken together with all the circumstances."
How did the State prove this video was real?
Clara was asleep, so she could not personally confirm the abuse the video shows, and there was no chain-of-custody evidence connecting the video to Amyda. Amyda argued that the only ways to authenticate a video were a firsthand witness who saw the event, or a "silent witness" showing that a reliable recording system produced it. The court rejected that. It said "there is no special codicil to the rules of evidence governing videos," and that circumstantial evidence can do the job.
The circumstantial evidence here came from several directions:
Clara testified in detail that she recognized her bedroom, her bed and pillowcases, the top she wore that night, and her own body as it looked that evening.
She identified the tattooed hand and its scars as Amyda's, and the two were alone in the room.
The video appeared to be filmed with a cellphone held in the right hand, and the two had been messaging that evening, so he would presumably have had his phone.
The video surfaced a little over a month later, and Amyda blocked Clara when she asked about it.
The court asked a pointed question: "What third-party fabricator would have access to all that?" The opinion also reports one oddity. When Amyda was arrested, his left hand had a different tattoo from the one in the video. But a tattoo artist who examined a booking photo testified that the tattoo appeared to have been freshly applied within the last eight to twelve days.
The court also said the evidence "went beyond just the distinctive characteristics of items in a video." The court did not decide whether recognizing items in a video would be enough by itself. It relied on the whole set of circumstances.
What about the best-evidence rule?
The best-evidence rule says an original recording is "required to prove its content" (Iowa Rule of Evidence 5.1002). The video the jury saw was a copy of something, and Amyda argued the copy should be excluded.
The court first held that a video is covered by the rule, as a continuous "photographic image." It then turned to rule 5.1003, which says a duplicate "is admissible to the same extent as the original unless a genuine question is raised about the original's authenticity or the circumstances make it unfair to admit the duplicate."
That is where the deepfake claim mattered most. The court said Amyda "had the initial burden to raise a genuine question about the authenticity of the original. He failed to do so." His lawyer argued in closing that "we live in the age of artificial intelligence" and pointed to news stories about celebrity deepfakes. The court said that advocacy "rested on popular culture rather than any of the evidence in the case." It also cited a Delaware trial-court decision saying that "the mere suggestion that a video may have been altered does not create such a genuine issue," and a District of Columbia appeals decision indicating that a defendant needed "some basis" to think a video was an inaccurate reproduction.
What would raise a genuine question about a video?
The court did not give a checklist, and this article will not invent one. What it did was contrast the facts. It noted that New York's highest court, in a 2026 case called In re M.S., ruled, over two separate dissents, that videos of sexual abuse were not sufficiently authenticated and should not have been admitted in a family court case. Those videos had been obtained by a self-described hacker and given to law enforcement well after the events in question. The Iowa court said that here, by contrast, "there are no identifiable circumstances to suggest that the video might be a deepfake." It did not say how an Iowa court would rule on facts like those in the New York case.
So the useful distinction is between a bare claim and an identifiable circumstance. The table below compares the two as this opinion frames them.
Question
In State v. Amyda
Who offers the video?
The State, which must show it is what it claims to be (rule 5.901).
What was the defense argument?
Deepfakes exist, and the State could not show where this video came from.
What did the court call that?
"Mere speculation" and "conjecture."
What did the State have?
A victim who recognized the room, her body, her clothing and the hand, plus surrounding circumstances.
What contrast did the court draw?
A New York case where the videos came from a self-described hacker and reached law enforcement well after the events.
Does this ruling apply outside Iowa?
It binds Iowa courts. Other states have their own evidence rules and their own appeals courts, and they may handle these questions differently. The opinion itself cited decisions from courts in other jurisdictions that reached similar results, but those are separate rulings under separate rules, so check your own state.
Federal courts use the Federal Rules of Evidence. Federal Rule 901(a) has the same core sentence as the Iowa rule, and 901(b)(4) lists the same "distinctive characteristics" example (Federal Rules of Evidence, uscourts.gov). The Iowa court said its rules were patterned on the federal ones. Still, a federal judge is not bound by an Iowa Supreme Court decision on how to apply them. If a federal court is handling your case, federal precedent controls.
Why does the "liar's dividend" matter?
The opinion uses that phrase, and a footnote defines it. It refers to the possibility that public awareness of deepfakes will make it easier to raise doubts about legitimate evidence. The idea is simple. The more people know fakes exist, the easier it becomes to wave away a real recording as fake.
The court did say it was "not oblivious to the risks of video evidence." It quoted the New York court's observation that most fabricated videos use real details from real people and places, then alter the pieces someone wants to change. The Iowa ruling holds both concerns at once. It recognizes that fabricated videos are a real risk and points to a New York case where videos were kept out. On this record, though, it held that the general existence of deepfakes did not raise a genuine question about this video.
These are practical steps, not procedures taken from the opinion. A lawyer licensed in your state can tell you how they fit your case.
Keep the original file and the device it came from, such as the phone that recorded it or received it. Do not edit or re-save it. The investigators in Amyda could not trace the video's digital footprint, and that gap is what the defense tried to use.
Save the message or email that carried the video, including the date and sender, along with the file details your device shows. Take screenshots of those too.
Write down who can identify what the video shows. In Amyda, the victim recognizing her room and her own body was central to authenticating the video. A witness who knows the place and the people can matter a great deal.
If you doubt a video is real, say why in specifics. A bare claim that it could be a deepfake was not enough in this Iowa case. Concrete facts, such as a doubtful source or details that do not match reality, give a judge something to weigh.
If your real video is being called fake, gather what shows it is genuine, starting with who recorded it and when.
Raise the objection early, through your lawyer. Amyda filed a pretrial motion in limine (a request for a ruling on evidence before trial). He also renewed his objection when the video was offered at trial.
This is general information, not legal advice. Evidence rules vary by state and court, so check the official rules or ask a licensed attorney in your state.
Frequently asked questions
Can you get a video thrown out by saying it's a deepfake?
Not by the claim alone. In State v. Amyda (Iowa Supreme Court, October 2026), the court held that the trial judge did not abuse his discretion in admitting a video, and that mere speculation it was a deepfake was not enough to bar it. To block a copy under Iowa's best-evidence rule, the defendant had to raise a genuine question about the original's authenticity, and he did not.
What does it mean to authenticate a video?
It means the side offering the video shows it is what that side says it is. Under Iowa Rule of Evidence 5.901(a), the proponent must produce evidence sufficient to support a finding that the item is what the proponent claims it is. In Amyda, a witness who recognized the people and the place, together with other circumstances, was enough.
Does a video need a witness who saw it being recorded?
Not in Iowa, according to this opinion. The court rejected the argument that a video can be authenticated only by a firsthand witness or by proof of a reliable recording system. Circumstantial evidence, such as distinctive details and surrounding circumstances, can be enough.
What is the best-evidence rule for videos?
It generally requires the original recording to prove what a recording shows. Iowa Rule 5.1003 lets a duplicate in unless a genuine question is raised about the original's authenticity or admitting it would be unfair. The Iowa court held that a video is covered by this rule.
Does the Amyda ruling apply in every state?
No. It is a decision of the Iowa Supreme Court and binds Iowa courts on Iowa evidence rules. Other states and federal courts have their own rules and precedents, and they may treat deepfake challenges differently. Check the law where your case is.
What is the liar's dividend?
It is the idea that public awareness of deepfakes makes it easier to raise doubts about real evidence. The Iowa opinion defines it in a footnote and noted that the defense lawyer's closing argument rested on popular culture, not evidence in the case.
This article is general legal information, not legal advice, and may not reflect the most current law or the law in your jurisdiction. Laws vary by state and change over time. For advice about your specific situation, consult a licensed attorney.
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