2026-06-19 · MP4 · 1 sample

C2PA-signed MP4 (generic)

A BMFF C2PA manifest validates (generic CreativeWork, not AI). The detector surfaces the C2PA signal; the AI-tool-name heuristic produced a spurious match against manifest bytes, which is a logged limitation.

Answer

What did this experiment find?

A BMFF C2PA manifest validates (generic CreativeWork, not AI). The detector surfaces the C2PA signal; the AI-tool-name heuristic produced a spurious match against manifest bytes, which is a logged limitation.

This result applies to the 1 documented sample tested on with aicheck 0.2.0 (c2pa-rs 0.82, wasm). It should not be generalized to every file exported by C2PA-signed MP4 (generic).

Experiment Summary

PlatformC2PA-signed MP4 (generic)
Tested at2026-06-19
Research page updated2026-07-10
Sample count1
File formatMP4
Parser versionaicheck 0.2.0 (c2pa-rs 0.82, wasm)
Browser/systemBrowser-local BMFF/C2PA parser in Chromium/Playwright local preview; aicheck 0.2.0; c2pa-rs 0.82.
Source/licenseApache-2.0 / MIT via contentauth/c2pa-rs fixtures

Provenance of this research record

Source, license, and authorship

Fixture source
Open the upstream fixture repository ↗
Declared license
Apache-2.0 / MIT via contentauth/c2pa-rs fixtures
Research operator
AICheck365, an organization; no individual author is claimed.
Environment
Browser-local BMFF/C2PA parser in Chromium/Playwright local preview; aicheck 0.2.0; c2pa-rs 0.82.

Expected Signals

  • BMFF C2PA manifest present
  • Generic signed creative-work provenance
  • No AI platform attribution expected

Actual Signals

  • C2PA manifest validates
  • MP4 container metadata is readable
  • A heuristic AI-tool-name match against manifest bytes is logged as a limitation

Misses

  • The detector should not claim this generic signed MP4 is AI-generated from C2PA alone.

Limitations

  • The sample is useful for container/C2PA parsing, not for platform attribution.
  • Heuristic matches inside binary manifest bytes require manual review.

Reproducible Steps

Run the test locally with C2PA Validator, MP4 Metadata Inspector. The file remains in the browser.

  1. Open the C2PA Validator or MP4 Metadata Inspector.
  2. Upload /samples/signed-video.mp4.
  3. Confirm BMFF/C2PA manifest readability.
  4. Check that the research note distinguishes signed provenance from AI attribution.

Related Tools and Platform Guides

References

Sources

  1. Upstream fixture repository ↗ — Apache-2.0 / MIT via contentauth/c2pa-rs fixtures.
  2. AICheck365 experiment registry (JSON) — record ID c2pa-signed-mp4-2026-06, tested 2026-06-19.