At which step the mark gets written
Four entries locate the marking step. Two write at generation, one at delivery, one at download. The other twelve describe a mark without saying when it is applied, which leaves open whether intermediate files carry it. As of 2026-10-13.
| Entry | What is published | Detail |
|---|---|---|
| SynthID | At generation | Added the moment content is created |
| Amazon Nova Reel | At generation | Applied to all videos the model generates |
| SceneMixer | At delivery | A corner badge added when the file is delivered |
| Sora | At download | On videos downloaded from the site or the app |
| The other eleven generators | Not stated | A mark is described without a step |
Inclusion rule. Entries read against one question: does a public page locate the marking step. A vendor that describes a mark without locating it is recorded as not stated. Order. Entries that locate the step first, earliest step first, then the rows that do not.
1Earlier is a different guarantee, not a stronger one
A mark written at generation is on everything the model produces, including drafts nobody will publish. A mark written at delivery is on the thing that ships. Those answer different questions: the first is about provenance of every artefact, the second is about disclosure to whoever receives the finished work.
Neither placement is a better version of the other, and treating them as points on one scale is the most common error in coverage of this subject. This site keeps the step as its own field so the two cannot be collapsed. A third placement has now appeared as well: Sora's visible watermark is described on videos downloaded from the site or the app, which locates it at the moment a file leaves rather than at either end of production.
2The unstated rows are the ones with practical consequences
Eleven generators describe a mark and never say when it is applied. For a production that exports intermediate clips for review, approval or hand-off, that is the difference between files that carry a mark and files that do not, and it cannot be resolved from any published page.
It is also a question a vendor could answer in one sentence. That none of the eleven has is a fact about how these pages are written: they are selling a plan, and the step in the pipeline is not something a plan table has a column for. Every entry that does locate the step describes it somewhere other than a price list.
3What this means for reconstructing a file's history
If the step is unstated, the presence or absence of a mark on any given file tells you less than it appears to. An unmarked clip might be from a plan that removes marks, or an intermediate from a pipeline that marks at delivery, and nothing published distinguishes them.
That is worth stating plainly because the opposite assumption is easy to make: that an unmarked file means somebody paid to remove the mark. On the published evidence, it does not mean that.
- When it is writtenThe watermark is added the moment content is created and does not change image or video qualityat generation
- Visible markA small corner badge is applied at delivery, on by defaultstated on the vendor's own page
- Machine-readable markingAmazon Nova Reel applies an invisible watermark to all videos it generates, and the detection solution can check for the existence of that watermarkapplied to all output
- Visible markListed for general availability among the provenance tooling for the vendor's own products: a visible moving watermark on videos downloaded from sora.com or the Sora applisted as provenance tooling
4Sources
Every line is read from the vendor pages listed on the support table, checked 2026-10-13. What earns a row is set out in the protocol. Nearby: Two marks at once, Free tiers, Getting it off.