Knowledge · Rule
Audio/video media type may be unsupported
Package Structure · A-MEDIA
Definition
The package declares audio or video media types that Apple Books may not accept for EPUB delivery.
Why
- Package built for Kindle EPUB 2 workflows without Apple Books EPUB 3 requirements.
- Exporter omitted Apple-required metadata or navigation.
Impact
Platform impact varies — see matrix below.
Platforms
Engine applicability · apple
| Platform | Result |
|---|---|
| KDP | Unknown |
| Apple Books | Warning |
| Google Play | Unknown |
| Kobo | Unknown |
References
- Apple Books Asset Guide
- Cermify Apple RID v1 — engineering/apple-rid-v1.md
Last updated · 2026-08-04
Why we believe
Provenance is loaded from RID (same source as Rule Radar) — not a second copy.
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