* materialize event counts in metrics endpoint
The metrics endpoint stored a lazy peewee query on the shared Prometheus collector, and collect() ran it later. Overlapping scrapes run in separate threadpool threads, so two requests could execute and step the same query's sqlite cursor at once. The rows are now read with list() before they reach the collector.
* fix fps overflow restarting ffmpeg after 3 seconds instead of 3 retry intervals
This is a regression from 0.18. The watchdog has restarted ffmpeg after 3 consecutive fps overflow checks since #13651, which was 3 retry intervals (30s by default) when the loop ran every retry_interval. #21297 moved the loop to 1s ticks without converting the count, so the window shrank to 3s. camera_fps is a 10s average, so one burst of buffered frames after a stream hiccup could keep it over the limit long enough to restart a healthy camera, and the next reconnect burst could repeat it. The threshold is now 3 * retry_interval ticks. When the count filled while restarts were still rate limited, the watchdog logged "Exiting ffmpeg...", marked the camera offline and reset the count without restarting. The check now waits for can_restart, so the log, status and restart always happen together.
* keep recording cleanup running after a failed pass
An exception anywhere in a cleanup pass, such as an OSError from a read-only or unmounted storage path, ended the recording cleanup thread with nothing logged. Retention stopped until restart, and recordings, previews and database rows kept growing. Each pass now logs the exception and the loop continues.
* expose frigate_camera_events as a gauge
The metric reports the current count of events in the database, which drops when retention prunes old events. As a counter, each prune read as a counter reset, so increase() and rate() inflated event counts. The series name changes from frigate_camera_events_total to frigate_camera_events. The test's porch/inside assertion was missing its `in event.text` and always passed.
* keep uvicorn idle connections open longer than nginx's upstream keepalive
uvicorn closed idle connections after its 5s default while nginx kept them pooled for 60s, so a request nginx sent on a connection uvicorn was closing got a 502. nginx retries that on a fresh connection for most methods, but not for POST or PATCH.
* snapshot websocket clients under the manager lock in the output loop
The output loop iterated ws4py's live websocket dict without its lock, so a client connecting or disconnecting mid-iteration raised "dictionary changed size during iteration" and killed the output loop. It now copies the clients under manager.lock once per frame and skips terminated ones, matching the jsmpeg and birdseye broadcasters.
* only cache preview frames when recording is enabled
The segment-end check tested the record config object instead of record.enabled, and the first frame after startup was written unconditionally. With recording disabled, the first segment still cached frames and encoded a preview.
* fix untranslated unknown resolution text in camera info dialog
* detect all AMD GPUs from vainfo
The vainfo check only matched "AMD Radeon Graphics", so drivers reporting names like "AMD Radeon Vega 8 Graphics", "AMD Radeon RX 6600", "AMD Custom GPU 0405", or older codename strings fell through and their GPU stats were collected as Intel. It now matches Mesa's "for AMD" driver string.
* return a 500 instead of raising when go2rtc is unreachable
The two go2rtc stream GETs had no exception handling or timeout, so a go2rtc outage raised a connection error with a traceback, and a hung go2rtc held the request open indefinitely. Both now catch request errors, log the cause, and use a timeout. The per-stream probe gets a 35s read timeout because go2rtc probes each source in turn, and one unresponsive source takes about 10s.
* retry camera snapshots after a failed load
AutoUpdatingCameraImage only scheduled the next frame from onLoad, so a single failed latest.webp request froze the image until the component remounted. It now retries on error, dropping the periodic cache key so the retry requests a fresh URL.
* reuse pooled upstream connections for nginx auth subrequests
The /auth subrequest proxied to a variable address, which nginx can't pool, and its location-level headers dropped the inherited Connection header so nginx sent Connection: close. Every authenticated request opened and closed its own loopback connection to the API. It now proxies to the frigate_api upstream with an empty Connection header so the keepalive pool is reused.
* run recording snapshot ffmpeg off the event loop
The recording snapshot and Frigate+ recording submit endpoints called get_image_from_recording inline, which is a blocking ffmpeg subprocess with no timeout, so every other request stalled until the frame was decoded. Both calls now run in asyncio.to_thread.
* fix camera info dialog overflowing on mobile
* adjust test
* refactor: Refactor camera nickname
* fix: fix cameraNameLabel visually
* chore: The Explore search function also displays the Camera's nickname in English
* chore: add mobile page camera nickname
* feat: webpush support camera nickname
* fix: fix storage camera name is null
* chore: fix review detail and context menu camera nickname
* chore: fix use-stats and notification setting camera nickname
* fix: fix stats camera if not nickname need capitalize
* fix: fix debug page open camera web ui i18n and camera nickname support
* fix: fix camera metrics not use nickname
* refactor: refactor use-camera-nickname hook.
