Who can check whether a file is marked
Four entries publish a checking route and they are not equally usable. Two name a platform or a public reader anyone can bring a file to. One checks inside the vendor's own assistant. One describes tools it keeps internally. As of 2026-09-22.
| Entry | What is published | Detail |
|---|---|---|
| Amazon Nova Reel | Yes, a public reader | Credentials inspected by dropping the video into Verify |
| Veo | Yes, a named platform | Videos can be verified using the SynthID verification platform |
| SynthID | Yes, published | Checking inside the vendor's assistant, plus a gated portal |
| Sora | Internal only | Detection tools described as the vendor's own |
| The other twelve generators | No | No detection route published |
Inclusion rule. Entries read against one question: does a public page describe a way to check a file for this mark. A route the vendor describes as limited or in testing is recorded with that note. Order. Publicly usable routes first, then vendor-bounded ones, then the rows with none.
1A mark nobody can check is only half a mechanism
Marking output is one job and letting somebody else confirm the mark is another. Almost everything on this site does the first: a logo in the corner, a field in the container, a watermark in the pixels. Almost nothing does the second in a way that reaches whoever receives the file rather than whoever made it.
That asymmetry is the most consequential gap in the record. A viewer, a broadcaster or a platform receiving a file has, on the published evidence, no route at all for twelve of the sixteen entries here, and the four that do publish one arrived in the register together, all of them documenting the signal and the reader in the same document.
2Checking inside the vendor's own product is a real route with a real boundary
It works, it is published, and it is bounded by the vendor's own surface. Whoever wants to check has to bring the file to that product, which is fine for a curious individual and awkward for an organisation with a pipeline. Sora's entry is bounded harder still: the detection tools are described as internal, so the strongest route in that row is one an outside party cannot use, while the C2PA metadata in the same list is readable by anybody with a reader.
This site records what is published rather than what would be convenient. The routes exist at three different distances from whoever holds the file, and the distance is part of the fact rather than a footnote to it.
3Why this page will change before most others
Detection is the part of this field moving fastest, because it is where the pressure from platforms and regulators lands. It is already the part of this register that has changed most: a column with one route in it now has four. The twelve empty rows are the ones most likely to gain a sentence next.
When they do, the entry will say who published it, what it covers, and the date it was read, which is the same treatment the one populated row gets today.
- DetectionGemini checks an uploaded image, video or audio clip for the watermark, and a separate SynthID Detector portal is in testing with journaliststwo published routes
- DetectionVideos can be verified using the SynthID verification platforma named platform
- DetectionContent Credentials can be inspected by dropping a generated video into publicly available tools such as Verifya public route
- DetectionAlso in that list: internal detection tools to help assess whether a certain video or audio was created by the vendor's productsheld inside the vendor
4What the delivered file carries
Next to the marking question in “Checking a file”, SceneMixer's pages describe its output like this:
It becomes a marked line — inner voice or narration — so it is heard while the picture shows something worth watching, rather than becoming a shot of somebody thinking.
SceneMixer, AI Dialogue Generator — “What happens to inner monologue from a novel?” (read 2026-10-13)
Every new video carries the SceneMixer AIGC badge in its bottom-right corner unless you turn it off.
SceneMixer, The AI Badge Switch (read 2026-10-13)
5Sources
Every line is read from the vendor pages listed on the support table, checked 2026-09-22. What earns a row is set out in the protocol. Nearby: At which step, Two marks at once, Free tiers.