The courtroom challenge posed by synthetic media has two sides: identifying fabricated evidence and avoiding unsupported rejection of genuine recordings.
Representatives of OpenAI and Meta addressed the U.S. Advisory Committee on Evidence Rules on October 15 about increasingly convincing AI-generated audio and video.
The meeting did not create a new binding deepfake-evidence rule. The committee’s materials reflect continuing examination of authentication issues rather than a new rule already in force.
Appearance cannot carry the whole assessment
A recording that looks or sounds plausible still requires a foundation.
For litigators, that directs attention to where the file came from, who created or received it, what happened to it and whether other evidence supports its contents.
Those questions remain useful even when a detection tool offers an opinion. A software result should be assessed within the evidentiary record rather than treated as a complete answer.
The same applies to an allegation that a recording is synthetic. Suspicion and proof are different things.
Preserve the source before the dispute develops
A practical approach begins early in the file.
Counsel can seek original recordings, document their source and preserve relevant information about transfers or edits. A compressed copy forwarded through several applications may be less useful for examining disputed features than the original file.
Where authenticity is contested, identifying the specific basis of the challenge can help focus further investigation.
A general assertion that AI could have created something does not explain what is wrong with the particular item.
Genuine evidence faces a cost problem too
If credible recordings routinely attract unsupported deepfake objections, parties may spend more time and money establishing facts that previously attracted little dispute.
That creates a case-management question alongside the technical one: how to examine a substantiated concern without allowing speculation to derail proceedings.
The U.S. committee discussion is relevant to Canadian lawyers as a comparative development. It does not amend Canadian evidence law.
What firms can review now
Litigation teams can assess their procedures for collecting original files, recording provenance, preserving supporting material and escalating technical concerns.
Those practices support authentication work regardless of whether a recording ultimately proves genuine or fabricated.
The strongest response to convincing synthetic media begins with a defensible record of where the evidence came from.
Related coverage: Judge Declines Sanctions Over AI Errors, Raises Junior Lawyer Training Concerns.
Sources: Reporting on the October 15 meeting · Judiciary evidence-rules agenda and supporting materials .