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Using CRS to Inject ID3 Timed Metadata Tags

CRS can inject ID3 timed metadata into HLS format ad creatives to facilitate client-side ad tracking.
The client player reads the ID3 metadata to enable frame-accurate ad tracking.
ID3 timed metadata injection works only on Safari on iOS.

Workflow for CRS for ID3 Injection

The workflow for ID3 injection is the same as in Detailed Workflows for JIT Repackaging. If the manifest server receives the ptplayer=ios-mobileweb parameter, it tells CRS to inject ID3 packets into the transcoded ad creative before uploading it to the CDN server.
In a multi-CDN setup, the manifest server uses the ptcdn parameter in the bootstrap URL to identify the CDN server to upload the ad creative.