GateTrue

What each generator documents about marking its output

A signal in the picture and a manifest around it

Both entries name what the output carries. One describes credentials attached around the picture, carrying the model and the platform. The other describes a signal written into the picture itself. As of 2026-09-22.

Where provenance data can be put, and what that costsAttached around the picture, a manifest is readable by ordinary tools and removable by ordinary handling, and it can carry detail such as the model and the platform. Written into the picture, a signal is thinner, harder to read and harder to remove without touching the frame.One file, two places to put a claimAround the pictureA credential manifest carrying the model and the platform,readable with publicly available tools.Inside the pictureA named signal, verifiable on a named platform, carryingexistence rather than detail.What a re-encode doesSeparates the manifest from the file, which one vendor statesoutright.What a crop doesThreatens an in-picture signal, which the scheme's own pagesaddress rather than the generator's.Detail and durability sit on different layers
Fig. 1 The richer claim sits on the layer one vendor says can be stripped. The durable claim is the thin one.
The two entries on one question at a time, in each vendor's own terms. Recorded 2026-09-22.
On this questionAmazon Nova ReelVeo
Where it livesAround the picture, and also inside itInside the picture
What it carriesThe model and the platform usedExistence, verifiable on a platform
Reader namedPublicly available toolsA named verification platform
Durability caveatA check works unless metadata was removedNone published
Document readA service card and a user guideDeveloper documentation

Inclusion rule. One row per question on which these two entries can be compared from their own published pages. Questions neither vendor addresses are left out rather than filled with a dash. Order. Fixed order: the mechanism first, then who holds it, then what it leaves behind.

Where each value above was read, and what the register records in the machine-readable marking column. Recorded 2026-09-22.
GeneratorMachine-readable markingDocument read
Amazon Nova ReelInvisible watermark plus C2PA Content CredentialsAI service card
VeoSynthID, with a verification platform namedVeo API documentation

Inclusion rule. The two entries on this page, with the value each one's own pages support in the column they diverge on. Order. Alphabetical by generator name.

1Two layers of one file, with opposite weaknesses

A credential manifest is attached to the container around the picture, which is what makes it readable by ordinary tools and what makes it removable by ordinary handling. A signal written into the picture is the reverse: harder to read, harder to destroy without touching the frame.

These two entries are the clearest pairing of the two arrangements in the register. Both name a public reader, so both are useful to a recipient, and a reader comparing them is comparing failure modes rather than degrees of effort.

2Detail lives on the fragile layer

The manifest row carries specifics: the model and the platform used to generate the video. The in-picture row carries existence, checkable on a named platform. So the richer claim is on the layer the vendor itself says can be stripped, and the more durable claim is the thinner one.

That trade is not a choice either vendor made badly; it is a property of where provenance data can be put. A reader who needs to know which model made a file wants the manifest and has to keep the container intact. A reader who only needs to know the file was generated is better served by the signal.

3One vendor publishes the limit of its own mechanism

The service card's companion user guide says a credentials check should indicate the file was generated unless the metadata has been removed. No other vendor in this register publishes a durability caveat of any kind, and the caveat sits on the entry with the richer claim.

The other entry names the transformations its scheme is designed to survive nowhere in its own documentation; that material is on the pages of the organisation that builds the scheme, which is why the scheme is kept as a separate entry here rather than folded into the generator row.

4Sources

  • Machine-readable marking
    Amazon Nova Reel 1.1 adds Content Credentials to videos it generates, built on the C2PA specification, carrying the model and the platform used to generate the videostandard namedAWS, Amazon Nova Reel service card / recorded 2026-09-22
  • Machine-readable marking
    Videos created by Veo are watermarked using SynthID, described as the vendor's tool for watermarking and identifying AI-generated contentstated under LimitationsGemini API, Veo documentation / recorded 2026-09-22

Both values above are read from the vendor pages linked in the rows: docs.aws.amazon.com and ai.google.dev, on 2026-09-22. Each entry has its own page, Amazon Nova Reel and Veo, and the rule for the column they diverge on is on the machine-readable marking column page. Other pairs: one price, two nouns, marking and licence.