.. _Changelog:

Changelog
=========

1.1.0
-----

- **License tiers**: Scout now supports three license tiers — Standard, Integration, and
  Enterprise. The active tier is logged at startup and gates which subsystems are started.
  See :ref:`License`.
- **MQA (Media Quality Assessment)**: Per-stream PSNR and SSIM computed on-device from the
  AMS encoder pipeline. Optional VMAF support via libvmaf (sampled at keyframe boundaries).
  The ``CMSD-MQA`` header is injected on segment responses for streams with MQA enabled.
  Configured per-stream via the REST API (``PUT /rest/scout/stream/{appName}/{streamId}/mqa``).
  See :ref:`MQA`.
- **Prometheus metrics export** (Standard+): Per-stream PSNR, SSIM, VMAF, bitrate, and
  injection counters exposed at ``http://<host>:9090/metrics``. See :ref:`Telemetry`.
- **MQA REST score ingest** (Standard+): Accept quality scores pushed by an external
  quality-assessment tool via ``POST /mqa/{streamName}`` (requires ``restApiEnabled: true``).
  Injected scores feed Prometheus and alerting. See :ref:`MQA`.
- **Quality alerting** (Enterprise): Webhook alerts when a stream's effective VMAF drops
  below the configured threshold (requires ``alertingEnabled: true``). See :ref:`Alerting`.
- **Filter install robustness**: ``ScoutFilter`` installation and removal no longer fail if
  the Tomcat JMX context MBean is not found — the ``web.xml`` change is persisted on disk
  and a message prompts for a manual application restart.

1.0.0
-----

- Initial release.
- CMSD-Static injection for HLS (``.m3u8``, ``.ts``) and DASH (``.mpd``, ``.m4s``) streams.
- Five CMSD-Static keys: ``d`` (duration), ``br`` (bitrate), ``ot`` (object type),
  ``sf`` (streaming format), ``st`` (stream type).
- Header delivery: ``CMSD-Static:`` RFC 8941 Dictionary response header.
- Tag delivery: ``#EXT-X-CMSD-STATIC:`` injected after ``#EXTM3U`` in HLS manifests.
- Tag delivery: ``<SupplementalProperty schemeIdUri="urn:mpeg:dash:cmsd:2020">`` injected
  as first child of ``<MPD>`` in DASH manifests.
- Configurable delivery mode: ``headers``, ``tags``, or ``both``.
- Configurable scope: ``manifests``, ``segments``, or ``both``.
- Bitrate resolved from ``_<N>kbps`` filename suffix with fallback to stream encoder settings.
- Two-level settings hierarchy: global → per-application.
- Configuration hot-reload without restarting AntMedia Server.
- Web-based management UI with per-application filter installation and settings editing.
- REST API for programmatic management.