SCTE-35 ad-marker loss
across the live→VOD stitch seam.

----- splice_insert cue excerpt (12 lines, crossing the cdn-A→cdn-E seam) -----
# section 1: live egress (cdn-A), 8 cue points emitted across the 90s window
[cue 1] splice_insert  pts=441,243,200 dur=15000  preroll=4000  avp_segmentation_type=1
[cue 2] splice_null    pts=442,118,400 dur=8000                          avp_segmentation_type=1
[cue 3] splice_insert  pts=443,920,100 dur=15000  preroll=4000  avp_segmentation_type=1
[cue 4] splice_null    pts=445,082,600 dur=8000                          avp_segmentation_type=1
[cue 5] splice_insert  pts=446,704,400 dur=15000  preroll=4000  avp_segmentation_type=1
[cue 6] splice_null    pts=447,884,200 dur=8000                          avp_segmentation_type=1
[cue 7] splice_insert  pts=449,406,700 dur=15000  preroll=4000  avp_segmentation_type=1
[cue 8] splice_null    pts=450,719,500 dur=8000                          avp_segmentation_type=1
# ─── stitch seam (cdn-A → cdn-E) ───────────────────────────────────────
# seam_header.scte35.cue_dropped: true
# seam_header.cue_filter_applied: live_egress_anti_refire_policy
# (the stitcher’s shared cue filter held across the seam; 8 cues dropped)
[cue 9]  splice_insert  pts=452,400,300 dur=15000  preroll=4000  avp_segmentation_type=1  # DROPPED
[cue 10] splice_null    pts=453,930,000 dur=8000                          avp_segmentation_type=1  # DROPPED

----- VOD HLS manifest excerpt (first 8 segments across the seam, after stitch) -----
#EXTM3U
#EXT-X-VERSION:6
#EXT-X-TARGETDURATION:6
#EXT-X-MEDIA-SEQUENCE:42
#EXT-X-MAP:URI="init.mp4"
#EXTINF:6.000,
seg-042.m4s
#EXTINF:6.000,
seg-043.m4s
#EXTINF:6.000,
seg-044.m4s
#EXTINF:6.000,
seg-045.m4s
#EXTINF:6.000,
seg-046.m4s
#EXTINF:6.000,
seg-047.m4s
#EXTINF:6.000,
seg-048.m4s
#EXTINF:6.000,
seg-049.m4s
# ranking note: the VOD manifest carries zero `#EXT-X-CUE-OUT` and zero
# `#EXT-X-DATERANGE` lines after the seam — the splice_insert cues never
# reached the VOD packager. SSAI/DSA receives no cue trigger on this asset.

----- cycle 1 (T+0m +8s, after split live/VOD cue-pass policy) -----
seam_header.scte35.cue_dropped:                   false
seam_header.cue_filter_applied:                  vod_passthrough_policy
vod.cue_point_coverage:                           1.0
vod.manifest_first_segment.ext_x_cue_out_count:   4
vod.manifest_first_segment.ext_x_daterange_count: 4
# rebalance_hints emitted:                        split_cue_pass_policy_live_vs_vod,
#                                                 raise_vod_cue_passer_threshold,
#                                                 pin_stitcher_to_pre_migration_cue_policy
# ad_break_count_per_hour (replayed asset):       4  (baseline was ~1)

{
  "stream_id": "cklivestitchertocuevod7921",
  "source": "https://cdn.example.com/live/event/manifest.m3u8",
  "protocol": "HLS+STITCH+SCTE-35",
  "checked_at": "2026-08-07T19:46:02Z",
  "ranked_hypotheses": [
    {
      "rank": 1,
      "hypothesis": "stitcher_cue_filter_overshoot",
      "confidence": 0.89,
      "evidence_signals": [
        "scte35.cue_dropped → fail (true on seam_header across cdn-A→cdn-E)",
        "vod.cue_point_coverage → fail (0.0 on the first VOD segment after the seam)",
        "vod.manifest_first_segment.ext_x_cue_out_count → fail (0 vs 4 expected per hour)",
        "wrapper.scte35_signal_in_manifest → fail (no EXT-X-CUE-OUT / EXT-X-DATERANGE post-seam)"
      ]
    },
    {
      "rank": 2,
      "hypothesis": "vod_manifest_missing_cue",
      "confidence": 0.07,
      "evidence_signals": [
        "manifest served green on cdn-E with no parse errors; the missing cues are a packager-side passthrough gap, not a manifest parse failure"
      ]
    },
    {
      "rank": 3,
      "hypothesis": "scte35_signal_replay_normal",
      "confidence": 0.04,
      "evidence_signals": [
        "SCTE-35 signal healthy on the live egress (8 cue points across the 90s window); the failure is on the crossover into the VOD packager, not on the upstream signal"
      ]
    }
  ],
  "agent_rebalance_hints": [
    "split_cue_pass_policy_live_vs_vod",
    "raise_vod_cue_passer_threshold",
    "pin_stitcher_to_pre_migration_cue_policy"
  ],
  "surfaced_to_humans": [
    {"owner": "stitcher vendor",   "task": "engage on the shared cue filter leaking into the VOD path"},
    {"owner": "on-call",           "task": "page for the cue-drop root-cause review on the live→VOD seam"},
    {"owner": "reliability team",  "task": "assign the postmortem write-up"}
  ]
}