Content Seal (Meta Seal)
MetaContent Seal is Meta's suite of invisible watermarking research code across audio, image, video and text. It collects AudioSeal, Video Seal and Pixel Seal, Watermark Anything, Stable Signature, TextSeal and related work on generation-time and in-model watermarking, each with released models and detectors. Meta states that the image version it deploys in production is a separate proprietary implementation.
Treated as one suite, so the most restrictive member license governs. Tagged self-attested: members ship open detectors, but a mark is a statistical signal, not a signed claim.
Openness
2 high confidence- license
- MIT(OSI
- source
- public
Most of the suite is MIT or Apache-2.0, but Stable Signature, the radioactive watermark and one set of Watermark Anything weights are released for non-commercial use only. Taken as one product, the suite is only as open as its most restrictive member, so it reads as source-available. CC-BY-NC-4.0 covers a part the product requires and does not permit commercial use, so the license tier is noncommercial.
- https://raw.githubusercontent.com/facebookresearch/audioseal/main/LICENSE recorded 2026-09-26
MIT License, Copyright (c) Meta Platforms, Inc. and affiliates
- https://raw.githubusercontent.com/facebookresearch/content-seal/main/LICENSE recorded 2026-09-26
MIT License, Copyright (c) Facebook, Inc. and its affiliates
- https://raw.githubusercontent.com/facebookresearch/content-seal/main/README.md recorded 2026-09-26
Suite index linking AudioSeal, Video Seal, Pixel Seal, Watermark Anything, Stable Signature, TextSeal, DistSeal, WMAR and radioactive watermarking; "The code is licensed under an MIT license"
- https://raw.githubusercontent.com/facebookresearch/distseal/main/LICENSE recorded 2026-09-26
MIT License, Copyright (c) Meta Platforms, Inc. and affiliates
- https://raw.githubusercontent.com/facebookresearch/radioactive-watermark/main/LICENSE recorded 2026-09-26
"Attribution-NonCommercial 4.0 International" (CC BY-NC 4.0), full text
- https://raw.githubusercontent.com/facebookresearch/stable_signature/main/LICENSE recorded 2026-09-26
"Attribution-NonCommercial 4.0 International" (CC BY-NC 4.0), full text
- https://raw.githubusercontent.com/facebookresearch/textseal/main/LICENSE recorded 2026-09-26
Apache License, Version 2.0, full text
- https://raw.githubusercontent.com/facebookresearch/videoseal/main/LICENSE recorded 2026-09-26
MIT License, Copyright (c) Meta Platforms, Inc. and affiliates
- https://raw.githubusercontent.com/facebookresearch/watermark-anything/main/LICENSE recorded 2026-09-26
MIT License, Copyright (c) Facebook, Inc. and its affiliates
- https://raw.githubusercontent.com/facebookresearch/watermark-anything/main/README.md recorded 2026-09-26
The COCO-trained weights released for reproducibility: "this model is under the CC-BY-NC License (LICENSE-COCO)"
- https://raw.githubusercontent.com/facebookresearch/wmar/main/LICENSE recorded 2026-09-26
MIT License, Copyright (c) Facebook, Inc. and its affiliates
Adoption
2 low confidenceGitHub stars across the suite's repositories are the only signal for the suite as a whole. AudioSeal's own package downloads belong to one member, so they are not counted for the suite. A star is not a use.
- https://ungh.cc/repos/facebookresearch/audioseal recorded 2026-09-26
facebookresearch/audioseal: 790 stars
- https://ungh.cc/repos/facebookresearch/content-seal recorded 2026-09-26
facebookresearch/content-seal: 243 stars
- https://ungh.cc/repos/facebookresearch/stable_signature recorded 2026-09-26
facebookresearch/stable_signature: 529 stars
- https://ungh.cc/repos/facebookresearch/videoseal recorded 2026-09-26
facebookresearch/videoseal: 786 stars
- https://ungh.cc/repos/facebookresearch/watermark-anything recorded 2026-09-26
facebookresearch/watermark-anything: 1,136 stars
Capability
3 low confidenceThe suite releases its detectors with its embedders, so a third party can test content for a Meta Seal mark without Meta. A detection is a statistical signal rather than a signed claim, two steps below NVIDIA's hardware attestation.
- https://arxiv.org/abs/2412.09492 recorded 2026-09-26
Video Seal: Open and Efficient Video Watermarking (arXiv 2412.09492)
- https://raw.githubusercontent.com/facebookresearch/audioseal/main/README.md recorded 2026-09-26
AudioSeal README: generator and detector models for localized audio watermarking
- https://raw.githubusercontent.com/facebookresearch/content-seal/main/README.md recorded 2026-09-26
"a comprehensive framework for invisible, robust watermarking across all modalities — audio, image, video, and text"; "Content Seal Image is deployed at scale for Muse Image with a custom proprietary implementation. We also provide open-source versions of our research models"
Verified 2026-09-26