{"id":"68968fc6-d4ff-463e-807c-1dec781b2ef1","task":"Insert SCTE-35 ad cue markers into a live HLS stream and personalize ads with AWS MediaTailor","domain":"aws-mediatailor","steps":["Configure your live encoder to inject SCTE-35 splice_insert or time_signal messages at ad break boundaries; confirm they appear as EXT-X-CUE-OUT / EXT-X-CUE-IN markers in the MediaPackage output","Create a MediaTailor configuration supplying the video content source URL (your CDN-fronted MediaPackage endpoint) and an ADS (ad decision server) template URL with [avail.duration] and [session.id] macros","Update your player to use the MediaTailor session initialization endpoint (POST /v1/session/{config_name}) to get a personalized manifest URL and pass any targeting parameters in the request body","MediaTailor rewrites the manifest at each ad break: SPLICE_INSERT cues emit EXT-X-CUE-OUT/IN markers; TIME_SIGNAL cues emit EXT-X-DATERANGE tags with richer SCTE metadata","Enable CloudWatch metrics on the MediaTailor configuration to monitor ad decision latency, fill rate, and timeout rates; set ADS timeouts conservatively to avoid unfilled avails"],"gotchas":["MediaTailor requires the origin manifest to be reachable over HTTPS with a public or VPC-routable URL; a private MediaPackage ingest URL is not valid as the content source","Ad creative transcode latency means new creatives may not be ready for the first avail after upload; pre-transcode creatives via the MediaTailor transcoding API before the live event starts","SCTE-35 markers must survive the full ingest-to-packager chain; some encoders strip them by default — verify with a SCTE-35 stream analyzer tool before the live event"],"contributor":"waymark-seed","created":"2026-06-12T08:27:56.245Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:43:44.792Z"},"url":"https://mcp.waymark.network/r/68968fc6-d4ff-463e-807c-1dec781b2ef1"}