Practical guide · Article 50 of the EU AI Act
From 2 August 2026, identifying advertising generated or altered with AI is mandatory across the European Union. This guide explains, in operational terms, which pieces need a label, how to label them channel by channel, what machine-readable marking is and who is accountable for it. No legal jargon.
Written by EficiencIAl Studio, an AI-native production company that delivers masters already labelled and documented
In one sentence: Article 50 of the EU AI Act requires, from 2 August 2026, that advertising generated or altered with AI be identifiable across the European Union, and that is met in three layers: a visible label adapted to the channel, machine-readable technical marking inside the file, and documentation proving the criteria applied.
Post-Brexit note: the obligation is tied to where a piece is broadcast, not to where it's produced or the advertiser's nationality. A UK brand running a campaign in EU markets has to label it exactly like an EU-based advertiser would.
What the law requires
Article 50 of the AI Regulation introduces transparency duties that land squarely on advertising. Reduced to the operational essentials, here they are.
The audience must be able to recognise that an advertising piece was generated or altered with AI: a clear identification, adapted to the medium where it airs.
The file must carry technical marking, metadata and content credentials, that declare its artificial origin even if the visible label disappears after recompression or cropping.
If the campaign includes a chatbot or virtual assistant, the user has to know they aren't talking to a person.
In June 2026, the European Commission published its Code of Practice on marking and labelling AI-generated content. The rules of the game are already written.
First decision
The right question isn't "did we use AI?" but "did AI generate or substantially alter what you see or hear?" This is the practical test we apply.
| Case | Label? | Why |
|---|---|---|
| Video, image or voice generated from scratch | Yes | This is the central case the law addresses: synthetic content the audience could mistake for real. |
| Real footage substantially altered (scenes added, faces modified, cloned voices) | Yes | The alteration changes what the viewer believes they are seeing or hearing. |
| Synthetic people or digital doubles that appear to be real | Yes, with reinforced clarity | This is deepfake territory, the case that will draw the most scrutiny. |
| Minor tweaks: colour correction, audio clean-up, stabilisation, removing a stray cable | Usually not | These are editing-assistance functions that don't substantially alter the content. |
| Grey area: generated backgrounds, shot extensions, generative fill | Case by case | It depends on how much of the piece is generated. This is where documenting your reasoning protects you. |
House rule: when in doubt, label it and write down why. A well-integrated label doesn't penalise creativity; getting called out in public for skipping it does.
Second decision
The law demands clarity, not one fixed formula. This is our recommended practice, channel by channel.
| Channel | Recommended visible label | Also |
|---|---|---|
| Television and VOD | A brief, legible on-screen caption at the start or end of the piece | A mention in the broadcast documentation the production company delivers |
| Social networks and platforms (Meta, TikTok, YouTube) | The platform's own AI-disclosure toggle, switched on | Visible identification on the piece itself too: the toggle doesn't travel with the video if it's reused elsewhere |
| Web and display | A mention in the creative or on the campaign's landing page | Technical marking in the published files |
| Digital out-of-home (DOOH) | On-screen labelling built into the piece, legible at the distance the format is viewed from | Documented criteria per screen version |
| Audio, radio and podcast | A spoken or written mention in the materials accompanying the spot | Metadata in the audio master |
The layer almost everyone forgets
The visible label is half of compliance. The other half lives inside the file.
Metadata and content credentials embedded in the master that declare its artificial origin so a system can detect it, even if the piece is recompressed, cropped, or loses its on-screen caption along the way.
It's applied when exporting the final masters, once per version, as part of the post-production workflow. Built in properly, it takes minutes per piece; bolted on afterwards, it forces you to reopen the whole production.
Third decision
If the piece airs in European territory, the obligation reaches the whole chain, wherever the content was generated.
It's the one broadcasting and the one that answers to the public and the regulator. It must be able to show the campaign went out compliant: a written record and rationale.
Devises the campaign and commissions the production. It's on the agency to ask about labelling and rights before signing off, and to set it out in the contract.
Executes and delivers the masters. Its masters must already carry the label, the technical marking, and a record of which shots are generated.
What keeps all this in order is a contract clause that allocates Article 50 responsibility. Ask us by email and we'll send you a ready-to-adapt template.
Before you broadcast
What we review on every campaign before it goes out the door.
Which pieces and versions make up the campaign, and which ones carry AI-generated or altered content.
A labelling decision per piece, with the reasoning in writing, including for the ones that don't get a label.
Visible identification adapted to each medium where that version will air.
Metadata and content credentials embedded in every final file.
A documented chain of rights for music, voice and image, with the models used on record.
A signed accountability clause and an archive of broadcast versions, in case anyone asks tomorrow.
The next step, free
Ask for the six-point checklist and the ready-to-adapt Article 50 contract clause, and we'll send both straight to your inbox. No sales call attached.
Request the checklist by emailPrefer not to deal with it?
We produce your piece and deliver it already compliant, or we audit and label the ones you already have: label per channel, technical marking on the master and a compliance record. Fixed quote in 24 hours.
See the compliance serviceFrequently asked questions
Sources: Regulation (EU) 2024/1689 (AI Act), Article 50 and its sanctions regime; European Commission Code of Practice on marking and labelling AI-generated content (June 2026). This guide is operational guidance, not legal advice: for specific cases, consult your legal counsel.