Replace unsafe fmt.Sprintf JSON formatting with proper struct marshalling in cloud.go. Add rawJSONOrEmptyArray() helper to safely handle json.RawMessage with fallback to empty arrays. Enhance motion detection overlay data in computervision by adding main stream dimensions (mainWidth/mainHeight) alongside motion frame dimensions, enabling accurate live-view scaling of detected regions.
Refactor motion detection logic to enable motion region visualization during continuous recording. Motion detection now runs in continuous mode when a motion region is configured, allowing live-view overlay display without triggering motion-based recording. In continuous mode without regions, motion detection is skipped as before. Updated conditional logic and added clarifying comments explaining the different code paths.
Report whether a camera is in continuous recording mode (24/7) to the Hub. This allows the Hub live view to disable the manual record button, which is a no-op when the camera is already recording continuously.
Add heartbeat-aware lifecycle management for manual/live-view recordings. The agent now tracks manual recording start time and viewer heartbeats, auto-stops recordings when heartbeats lapse or a max duration is reached, and clears state on stop/restart. MQTT recording payloads gain a `heartbeat` flag so keep-alives refresh active sessions without unintentionally restarting recordings after auto-stop.
Corrects the default AGENT_TURN_URI value in the configuration table from port 348 to 3478. This fixes a typo and aligns the TURN URI with the standard/STUN port used elsewhere in the README.
Add livePreviewHttp flag to the device payload and log whether HTTP preview transport is enabled or disabled. Track the transport actually used (HTTP vs MQTT) with a lastTransport variable to avoid per-frame log spam and emit informative logs only when the transport changes, including fallback reasons (Hub not configured or HTTP upload failure). Capture HTTP publish errors to include in fallback messages, and lower the per-frame MQTT publish log level from Info to Debug. Small comment added explaining the logging behavior.
Add an HTTP-based live snapshot publisher to send resized SD preview frames directly to hub-api, reducing MQTT broker load. Introduce livesnapshot.Publisher with credential-stripping redirect handling and a publish timeout. Split live-preview signaling into two channels (HandleLiveSD and HandleLiveSDHTTP), add a Transport field to RequestSDStreamPayload, and update the MQTT request handler to signal the correct channel. Update cloud.HandleLiveStreamSD to prefer HTTP uploads for viewers that requested it, falling back to the legacy MQTT image push when needed.
Two stacked defenses against "runtime error: makeslice: len out of range"
observed in HandleLiveStreamSD on agents publishing snapshots over MQTT.
Extract the liveview base-dimension logic into utils.ResolveBaseDimensions,
gating the aspect-ratio compute on width>0 && height>0. A camera that hasn't
probed yet has Width=0, which made the ratio +Inf and int(float*+Inf) yield
MinInt - later cast to uint at ResizeImage call sites, wrapping to ~MaxUint
and crashing nfnt/resize's allocator. The helper also de-duplicates the two
identical inline blocks in RunAgent (main and sub stream).
utils/main.go: clamp ResizeImage's newWidth/newHeight inputs above a sane
camera ceiling (8192) to 0 ("auto"). Covers all three call sites (cloud,
capture, websocket) in one place so any future caller passing a wrapped or
negative uint silently falls back to source-aspect resize instead of panicking.
Driven by tests in utils/resize_test.go (RED/GREEN).
Introduce live HLS streaming pipeline and wire it into the agent.
- Add cloud/livehls: HandleLiveStreamHLS reads packets, gates session lifetime by viewer keepalives, starts sessions lazily on keyframes and announces ready state over MQTT.
- Add livehls publisher and session (cloud/livehls/{publisher,session}.go) to upload init + media CMAF segments to hub-api using a header-based ingest contract; includes redirect-credential stripping and init-refresh logic.
- Add video/livehls.go: LiveSegmenter converts Annex B video into one init (ftyp+moov) and self-contained CMAF media segments (styp+moof+mdat) keyed by sequence/duration.
- Add tests for publisher and session behavior (cloud/livehls/publisher_test.go, video/livehls_test.go).
- Wire components and routing: add Communication.HandleLiveHLS channel and start HLS handler in RunAgent; add RequestHLSStreamPayload and HandleRequestHLSStream in MQTT router to treat HLS requests as viewer keepalives.
This enables short‑latency HLS streaming (CMAF segments uploaded fire‑and‑forget) with viewer keepalive semantics and minimal changes to the control plane.
Refine loop/restart (seam) detection and enhance the mp4 analysis tooling.
- mp4: Replace previous previous-interval-based seam heuristic with a safer approach that (1) tracks the running minimum keyframe interval (MinKeyframeGapMs) as the reference cadence and (2) requires the buffered GOP to be genuinely truncated before dropping it. This avoids false positives on variable-GOP (smart-codec) cameras. Added fields, logging updates, and helper methods: bufferedVideoCount, expectedGopFrames, bufferedVideoFrameDuration. LastKeyframeGapMs is now diagnostic only.
- cmd/mp4analyze: Add -from/-to flags and auto-select a detailed inspection window centred on the largest keyframe gap. Limit per-sample printing to that window (and anomalies), fix sync-sample bit detection, pass window to sliceHeaders, and add a compact SUMMARY health report with medians and checks. Added inspectWindow and median helpers.
- tests: Add mp4_variablegop_test.go to verify variable-GOP streams keep healthy short GOPs and that no frames are dropped by the improved seam logic.
These changes prevent healthy GOPs from being discarded on normal short GOPs that follow long static GOPs and add better diagnostics for debugging artifacts.
