Is the mark invisible, or metadata?

Google Veo marks every video with SynthID, an invisible watermark. Amazon Nova Reel points to provenance metadata that Content Credentials Verify can read unless removed. SceneMixer names a visible badge and a metadata line. From 3 source pages, read 2026-09-25; no maker pays to be listed.

Inclusion rule. Vendor pages and references whose printed figures bear on this delivery target. Order. Alphabetical by source name.

1As printed

Videos created by Veo are watermarked using SynthID

Google AI for Developers, Veo 3.1 in the Gemini API

This should indicate the image was generated unless the metadata has been removed.

Amazon Nova user guide, video generation

2What it means for delivery

An invisible watermark is in the picture and survives re-encoding; metadata sits beside the picture and can be stripped. The two are not the same, and neither is a visible badge.

No figure on watermark on output from 14 vendors: Adobe Firefly, BytePlus Seedance, Flixly, Grok Imagine, Higgsfield, Kling AI, Luma, M Studio, MiniMax, OpenAI Sora, Pexo, PixVerse, Revid AI and Vidu.

• Limitations
  Every video carries a SynthID watermark that can be verifiedwatermarkingGoogle AI for Developers, Veo 3.1 in the Gemini API / recorded 2026-09-25
• Nova Reel 1.1
  Content provenance can be checked with Content Credentials Verify unless the metadata was removedcontent provenanceAmazon Nova user guide, video generation / recorded 2026-09-25
• The label
  A corner badge and AI-generated-content metadata; always added without a paid plan, off by default on paid plansSceneMixer, what comes out (video specs guide) / recorded 2026-09-25

3Related checks

• Which plans remove the watermark?
• Do unpaid plans carry a watermark?
• Is the watermark a setting the user controls?
• Watermark on output across twenty-nine tools
• Google Veo: watermark on output
• Amazon Nova Reel: watermark on output