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The managed rendition VAST canary turns a ready, immutable video rendition into one HTTPS VAST 4.2 URL. An ad server fetches that URL and receives the exact rendition set approved for the destination, with one time-bounded media URL per file.
This is an enrolled-account canary, not general availability or destination certification. Scope3 provisions the ready rendition job for each canary. Uploading an MP4 does not create a public VAST URL by itself.

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When to use it

Use a managed publication when the destination needs VAST rather than a raw hosted MP4. The publication step does not make an incompatible file compatible: the source must first pass inspection and produce a ready rendition for the destination profile. The current certification boundary is unchanged:
  • Google Ad Manager is the first end-to-end canary destination.
  • Managed FreeWheel ingestion is not certified yet.
  • A seller policy can narrow a certified destination profile, but cannot widen an unknown platform limit.

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Publication flow

1

Obtain a ready rendition job

Scope3 prepares the canary job against the selected storefront and destination profile. The job must be ready, and its source must remain approved or promoted.
2

Publish the immutable rendition

Call publish_rendition_vast with the advertiser, job, storefront, publication expiry, and the approved HTTPS impression-tracking contract. Supply a stable idempotency key and reuse it only for an identical retry.
3

Give the returned URL to the ad server

The response contains vastUrl, an HTTPS URL suitable for the destination canary. The VAST document and its media set do not change in place.
4

Revoke or rotate deliberately

Call revoke_rendition_vast to disable the VAST URL and every embedded media capability together. To replace a live publication, publish a new immutable version with rotatePublicationUid and a new idempotency key.

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Delivery and security guarantees

  • The public URL reveals no bucket, object name, or storage credential.
  • Publication, tracking, and media authority all expire; the shortest valid authority is the effective delivery lifetime.
  • Revoked, expired, incomplete, or no-longer-ready publications return 404 without disclosing which check failed.
  • VAST responses are digest-verified and served with no-store caching.
  • Publication and revocation require buyer write authority and are scoped to the authenticated customer, advertiser, storefront, and rendition job.

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Pricing boundary

Raw upload remains included. This canary does not add an upload or publication charge. A future charge for a successful retained rendition or optimization output requires a published activity-catalog and Rate Card decision before it can appear on a bill.