# I have a finished master: what are the handoffs to a cinema/streaming package, to captions and audio description, and to an archive, and which public tool or text checks what at each one?

- id: art_01M5NJ1ETNTS9X6B6KJBMAYCR5
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T10, T13, T20 · tags: none
- updated: 2026-10-23T23:37:49.648Z
- url: https://veyrul.com/articles/art_01M5NJ1ETNTS9X6B6KJBMAYCR5

Synthesis supported by reviewed steps: the chain from master to archive has distinct handoffs (package to IMF or DCP; adding timed text and audio description; validation; archive packaging), each with its own primary text and open checker, and a validator's pass covers only what it implements (Photon aims to validate IMPs for listed applications; libdcp and ClairMeta check DCP structure; BagIt 'valid' only matches manifest checksums). ClairMeta profiles can downgrade or silence checks, so record the profile with any pass. No single tool spans the chain.

Synthesis supported by reviewed steps: the chain from master to archive has distinct handoffs (package to IMF or DCP; adding timed text and audio description; validation; archive packaging), each with its own primary text and open checker, and a validator's pass covers only what it implements (Photon aims to validate IMPs for listed applications; libdcp and ClairMeta check DCP structure; BagIt 'valid' only matches manifest checksums). ClairMeta profiles can downgrade or silence checks, so record the profile with any pass. No single tool spans the chain.

Curator qualifications: Overview disposition 2026-10-22; no validator run. SMPTE ST 2067 and ST 429 normative texts not read.

Limitations: Overview disposition 2026-10-22; no validator run.

Evidence status: curator/producer inference or synthesis from the cited sources (code read, not executed, where code is cited); correlated desk review (Claude); not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://www.rfc-editor.org/rfc/rfc8493.txt",
      "note": "Netflix/photon README.md @d5fe1494 lines 12-18; RFC 8493 lines 270-277 (reviewed in CA-B574); ClairMeta profile.py (reviewed in CA-B587)"
    },
    {
      "url": "https://github.com/ClairMeta/ClairMeta/blob/b3b66a024174976ffbde4b6dfff2b599e84e4757/README.rst",
      "note": "Netflix/photon README.md @d5fe1494 lines 12-18; RFC 8493 lines 270-277 (reviewed in CA-B574); ClairMeta profile.py (reviewed in CA-B587)"
    },
    {
      "url": "https://id.loc.gov/vocabulary/preservation/eventType/val.json",
      "note": "Netflix/photon README.md @d5fe1494 lines 12-18; RFC 8493 lines 270-277 (reviewed in CA-B574); ClairMeta profile.py (reviewed in CA-B587)"
    },
    {
      "url": "https://public.ccsds.org/Pubs/650x0m3.pdf",
      "note": "Netflix/photon README.md @d5fe1494 lines 12-18; RFC 8493 lines 270-277 (reviewed in CA-B574); ClairMeta profile.py (reviewed in CA-B587)"
    },
    {
      "url": "https://github.com/cth103/libdcp/blob/891facc8ce17cd767948ac5c2eb629bca5288f64/src/verify.cc",
      "note": "Netflix/photon README.md @d5fe1494 lines 12-18; RFC 8493 lines 270-277 (reviewed in CA-B574); ClairMeta profile.py (reviewed in CA-B587)"
    },
    {
      "url": "https://github.com/Netflix/photon/blob/d5fe1494adc83000ef744d5c01bd714a778fac00/README.md",
      "note": "Netflix/photon README.md @d5fe1494 lines 12-18; RFC 8493 lines 270-277 (reviewed in CA-B574); ClairMeta profile.py (reviewed in CA-B587)"
    }
  ]
}
```

Evidence claims:
- [inference] Synthesis supported by reviewed steps: the chain from master to archive has distinct handoffs (package to IMF or DCP; adding timed text and audio description; validation; archive packaging), each with its own primary text and open checker, and a validator's pass covers only what it implements (Photon aims to validate IMPs for listed applications; libdcp and ClairMeta check DCP structure; BagIt 'valid' only matches manifest checksums). ClairMeta profiles can downgrade or silence checks, so record the profile with any pass. No single tool spans the chain. · locator: Netflix/photon README.md @d5fe1494 lines 12-18; RFC 8493 lines 270-277 (reviewed in CA-B574); ClairMeta profile.py (reviewed in CA-B587) · source: https://www.rfc-editor.org/rfc/rfc8493.txt

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

Use this evidence:
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