Media agent for Video JS v5.0.0

• Breaking change: This release adds a package.json#exports map. Deep imports into internal paths of this package will no longer resolve — only the root export (@newrelic/video-videojs-js) and the new /browser subpath are valid import targets. Update any direct deep-imports before upgrading.

New features

• /browser subpath export: A @newrelic/video-videojs-js/browser entry point is now available that excludes unused Vega/connected-device code, reducing bundle size for browser consumers.
• notifyAdSkipped() (MediaTailor): Host apps with a custom skip-ad UI can report a user-initiated skip. Emits the skipped ad-end event when in an ad; no-op otherwise. Mirrors the equivalent API on the iOS/Android trackers.
• stopTracking() (MediaTailor): Reversible teardown that stops polling and unregisters listeners without disposing the tracker, so it can be resumed later. Shares the method name used by the iOS/Android trackers.
• AD_ERROR events (MediaTailor): Non-terminal failures now surface as AD_ERROR events in NRDB with a semantic errorCode (NO_FILL, ADS_TIMEOUT, TRACKING_FETCH_FAILED, TOKEN_EXPIRED, MISSING_AVAIL_START, MANIFEST_TRACKING_MISMATCH) instead of only appearing in the debug log.
• adPrimaryId attribute (MediaTailor): AD_START, AD_END, and AD_QUARTILE now carry adPrimaryId (the VAST creativeId, falling back to availId:adId) so count(DISTINCT adPrimaryId) counts true creatives, not per-avail ad IDs.

Improvements

• @newrelic/video-core updated to 5.1.0, which includes a TypeScript conversion, upstream bug fixes, and dependency patches.
• Configurable poll cadence (MediaTailor): config.ad.pollIntervalMs overrides the manifest-derived live poll interval (clamped to 100–5000 ms) for battery- or CPU-constrained clients. Behavior is unchanged when the option is omitted.
• Tracking URL from HLS manifest (MediaTailor): The tracker now reads the tracking endpoint from an #EXT-X-DATERANGE CLASS="tracking" tag when present, removing the need to pass an explicit trackingUrl on non-AWS CDNs. An explicit option still takes precedence.
• Source-change reset (MediaTailor): Swapping player.src() now resets the tracker — cancels in-flight fetches, clears the stale ad schedule, and re-derives the tracking endpoint — instead of continuing to poll the previous session's endpoint.

Bug fixes

• MediaTailor: Only the first ad in a multi-ad pod was tracked. The paging loop re-fetched the same avail on every page; the tracker now fetches the full window in a single tokenless request.
• MediaTailor: The tracking endpoint could not be derived for implicit-session media-playlist URLs, so Tier-1 ad detection never ran for those sessions.
• MediaTailor: config.ad.segmentPrefix was silently ignored because it was mapped to the wrong internal key.
• MediaTailor: A DASH period was classified as an ad when only one of several representations resolved to an ad-marked URL. Classification now requires every representation to match.
• MediaTailor: AD_END was not fired when a pod ended before its enclosing break boundary, causing completions to be undercounted.
• MediaTailor: Pod-count mismatches between manifest and tracking data silently corrupted break geometry; the tracker now reconciles counts explicitly and emits MANIFEST_TRACKING_MISMATCH.
• MediaTailor: Avails with a missing startTimeInSeconds were silently dropped, undercounting impressions in NRDB; the tracker now falls back to the first ad's start and emits MISSING_AVAIL_START.
• MediaTailor: Live sliding-window re-merges duplicated or dropped ad breaks when start times jittered; breaks now deduplicate by stable identity (availId + availProgramDateTime).
• MediaTailor: No-fill avails emitted phantom AD_START/quartile events; they now emit only break boundaries plus AD_ERROR(NO_FILL).
• MediaTailor: Expired tracking pagination tokens (HTTP 400) were not handled; the token is now dropped and retried once before emitting TOKEN_EXPIRED and stopping polling.
• MediaTailor: Manifest fetches did not re-check isDisposed after each await, risking state mutation on a disposed tracker.
• AD_RESUME was fired on first play into an ad, not only after a genuine pause.
• Disposing mid-ad did not emit the outstanding AD_END/AD_BREAK_END, leaving the break dangling.
• DASH EventStream presentationTime values were treated as raw ticks instead of being converted to seconds, misplacing ads at wrong offsets.
• HLS #EXT-X-CUE-OUT-parsed ad breaks did not initialize quartile flags, causing quartile events to fire more than once per ad.