Check Caption Master Integrity

01 / CONTEXT

Define the control decision

File restrictions cannot determine whether captions are accurate, synchronized or accessible. Run an integrity check for missing cues, timing drift, incorrect speaker labels, broken line breaks, unsupported format, stale metadata and mismatched language variants.

02 / PROCEDURE

Run the control sequence

1. 01

   Confirm title, language, format, frame rate, version and release date.

2. 02

   Compare cues, timestamps, speaker labels, descriptions and line breaks.

3. 03

   Review reading speed, synchronization, placement and contrast dependencies.

4. 04

   Match each localization variant to the same approved source version.

5. 05

   Record reviewers, checksum, approval and delivery time.

03 / EVIDENCE

Preserve proof without personal data

A defensible control record identifies the caption owner, video title, language, subtitle format, frame rate, authoritative path, permitted accounts, restriction mode, version ID, accessibility-review date, checksum evidence, recovery owner and next review date. It should not contain unreleased media, personal data, credentials or confidential production notes. Use fictional media and non-identifying speaker labels during every technical test.

Recheck the arrangement after changes to Windows, caption software, accessibility tooling, localization workflow, storage, Folder Protect, permissions, service accounts or production roles. Confirm both usability and recovery: an authorized editor should read the final subtitle master, an unauthorized account should not alter it, and the recovery owner should restore a separately held copy without depending on the protected folder. Preserve unexpected behavior before changing controls.

Keep the claim narrow. Local restrictions may reduce accidental writing, deletion or access on a tested Windows path, but they do not encrypt data, establish caption accuracy, timing, synchronization, speaker identification, readability, accessibility conformance, localization quality or delivery acceptance, administer identities, provide version history or replace backup. Escalate those requirements to the platform and accountable accessibility owner designed to meet them.

Ask a second editor to follow the written procedure without verbal help. Record whether that person can identify the final master, create a working copy, recognize the version stamp, interpret denied access and find the recovery owner. This usability check reveals ambiguous paths, hidden service-account dependencies and undocumented knowledge before a caption application, delivery platform, storage or staff change. Correct the procedure, repeat the test with fictional media and retain only minimal evidence.

04 / BOUNDARY

State what the control cannot prove

An integrity check does not establish accessibility conformance, translation quality, platform acceptance, legal sufficiency or authorization to distribute.

Validate the exact Windows account, caption application, caption workflow, storage path and current product release. If encryption, caption approval, accessibility review, immutable history, identity governance or regulated retention are required, select systems designed for those jobs rather than broadening a desktop restriction claim.

05 / SOURCES

Primary references

• W3C: Captions
• NIST SP 800-53 Rev. 5

References support specific controls and do not imply endorsement.