[Support]: History Playback Hanging in Firefox

[ofcedwards]

Describe the problem you are having

When playing back historical recordings by clicking on a camera feed and then clicking the "History" button, I regularly experience hanging playback in Firefox on Windows 11. This pretty much always occurs when playback starts on a new hour. For example, if I'm playing back video from 10:00am - 10:59am, the hang occurs when playback reaches 11:00am. When playback hangs, the video feed appears low resolution and a circular loading indicator appears over it. It never seems to finish buffering, however, as playback doesn't continue and the history view needs to be exited to resume normal function.

Based on some quick testing, it seems this issue may only manifest when running playback speed at 16x, which is generally the speed I use in the history view, as I'll only use it to scan for any events of interest that object detection may have missed. My use case for that is when a neighbor reports an incident at an approximate date/time and I want to verify that I didn't capture anything relevant.

I've tried out the 16x playback in Microsoft Edge and it works flawlessly, but I'd like to figure out how to get it functioning properly in Firefox, as that's generally the only browser I use.

Version

0.17.0-4dcd296

What browser(s) are you using?

Firefox 147.0.4

Frigate config file

mqtt:
  host: ***
  user: ***
  password: ***

database:
  path: /db/frigate.db

model:
  path: plus://c7b38453956cda87076baba4aca213e6

auth:
#  cookie_secure: true
  session_length: 604800
  refresh_time: 518400

tls:
  enabled: false

semantic_search:
  enabled: true
  reindex: false
  model_size: small

lpr:
  enabled: true
  device: CPU
  min_area: 1500
  match_distance: 1
  debug_save_plates: true
  known_plates:
    ***:
      - "***"
    ***:
      - "***"
    ***:
      - "***"

cameras:
  front_door:
    lpr:
      enabled: false
    ffmpeg:
      inputs:
        - path: rtsp://127.0.0.1:8554/front_door
          roles:
            - record
            - detect
      input_args: preset-rtsp-restream
      output_args:
        record: preset-record-generic-audio-copy
    detect:
      height: 960
      width: 1280
      fps: 5
      annotation_offset: -1250
    zones:
      front_yard:
        coordinates: 
          0,1,1,1,1,0.599,0.921,0.593,0.748,0.599,0.562,0.608,0.345,0.608,0.131,0.593,0,0.609
        inertia: 3
        loitering_time: 0
    motion:
      mask:
        - 0.23,0,0.23,0.03,0.128,0.03,0.128,0
        - 0,0.249,0.153,0.152,0.309,0.087,0.415,0.067,0.396,0.443,0.321,0.394,0.266,0.446,0.263,0.477,0.155,0.477,0.123,0.455,0.066,0.462,0,0.456
        - 0.496,0.44,0.495,0.052,0.66,0.067,0.767,0.097,0.849,0.125,0.878,0.256,0.893,0.389,0.896,0.446,0.794,0.454,0.72,0.455,0.653,0.455,0.594,0.455,0.545,0.461
        - 0.966,0.415,0.947,0.262,0.922,0.152,0.906,0.095,0.878,0,1,0,1,0.41
      threshold: 30
      contour_area: 10
      improve_contrast: 'true'
    objects:
      filters:
        person:
          mask:
            - 0.236,0.562,0.261,0.563,0.26,0.554,0.236,0.554
#            - 0.305,0.559,0.364,0.559,0.364,0.541,0.305,0.54
        car:
          mask:
            - 0.164,0.556,0.26,0.564,0.371,0.567,0.371,0.496,0.238,0.497
            - 0.587,0.631,0.697,0.596,1,0.572,1,1,0.617,1
    review:
      alerts:
        labels:
          - person
        required_zones:
          - front_yard
      detections:
        labels:
          - dog
          - cat
          - bird
          - squirrel
          - rabbit
          - deer
          - bicycle
          - motorcycle
          - boat
          - package
          - waste_bin
          - robot_lawnmower

  driveway:
    ffmpeg:
      inputs:
        - path: rtsp://127.0.0.1:8554/driveway
          roles:
            - record
            - detect
      input_args: preset-rtsp-restream
      output_args:
        record: preset-record-generic-audio-copy
    detect:
      height: 1080
      width: 1920
      fps: 5
      annotation_offset: -1250
    motion:
      mask:
        - 0.71,0,0.71,0.05,1,0.05,1,0
        - 0.815,0.066,0.914,0.111,1,0.179,1,0.038,0.762,0.042
        - 0,0,0,0.151,0.034,0.154,0.062,0.114,0.066,0.076,0.162,0.038,0.162,0
      threshold: 50
      contour_area: 10
      improve_contrast: true
    live:
      streams:
        Main Stream: driveway
        Sub Stream: driveway_sub
    objects:
      filters:
        car:
          mask: 0.064,0.201,0.159,0.159,0.248,0.128,0.216,0.061,0.102,0.125
    zones:
      front_yard:
        coordinates: 
          0.051,0.279,0.163,0.235,0.27,0.212,0.378,0.193,0.505,0.184,0.632,0.191,0.754,0.211,0.893,0.253,1,0.398,1,1,0,1,0,0.33
        loitering_time: 0
        inertia: 3
    review:
      alerts:
        labels:
          - person
        required_zones:
          - front_yard

record:
  enabled: true
  alerts:
    retain:
      days: 30
  detections:
    retain:
      days: 30
  continuous:
    days: 0
  motion:
    days: 30
snapshots:
  enabled: true
  retain:
    default: 30

objects:
  track:
    - person
    - face
    - car
    - dog
    - cat
    - bird
    - squirrel
    - rabbit
    - deer
    - bicycle
    - motorcycle
    - boat
    - license_plate
    - amazon
    - ups
    - fedex
    - usps
    - dhl
    - package
    - waste_bin
    - robot_lawnmower
    - school_bus
  filters:
    face:
      min_score: .7
    license_plate:
      min_score: .7
      min_area: 1000
    amazon:
      min_score: .75
    ups:
      min_score: .75
    fedex:
      min_score: .75
    car:
      min_score: .65
      threshold: .8
    waste_bin:
      min_score: .6
      threshold: .8

ffmpeg:
  hwaccel_args: preset-vaapi

detectors:
  coral:
    type: edgetpu
    device: pci:0

timestamp_style:
  position: tl
  format: '%m/%d/%Y %H:%M:%S'
  color:
    red: 255
    green: 255
    blue: 255
  thickness: 1
  effect: solid

go2rtc:
  streams:
    front_door:
      - rtsp://***:***@192.168.1.30:554/cam/realmonitor?channel=1&subtype=0&authbasic=64#backchannel=0
      - ffmpeg:front_door#audio=opus
    driveway:
      - rtsp://***:***@192.168.1.31:554/cam/realmonitor?channel=1&subtype=0&authbasic=64
      - ffmpeg:driveway#audio=opus
    driveway_sub:
      - rtsp://***:***@192.168.1.31:554/cam/realmonitor?channel=1&subtype=1&authbasic=64
  webrtc:
    candidates:
      - 192.168.1.99:8555
      - stun:8555

version: 0.17-0
camera_groups:
  Stack:
    order: 1
    icon: LuZoomIn
    cameras:
      - front_door
      - driveway
detect:
  enabled: true

Relevant Frigate log output

No relevant logs generated

Relevant go2rtc log output

No relevant logs generated

FFprobe output from your camera

[{"return_code":0,"stderr":[],"stdout":{"programs":[],"stream_groups":[],"streams":[{"codec_long_name":"AAC (Advanced Audio Coding)","avg_frame_rate":"0/0"},{"codec_long_name":"H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10","width":2960,"height":1668,"avg_frame_rate":"20/1"}]}}]

Frigate stats

No response

Install method

Docker CLI

docker-compose file or Docker CLI command

docker run
  -d
  --name='frigate'
  --net='bridge'
  --pids-limit 2048
  -e TZ="America/New_York"
  -e HOST_OS="Unraid"
  -e HOST_HOSTNAME="Tower"
  -e HOST_CONTAINERNAME="frigate"
  -e 'FRIGATE_RTSP_PASSWORD'='***'
  -e 'PLUS_API_KEY'='***'
  -e 'LIBVA_DRVIER_NAME'='i965'
  -l net.unraid.docker.managed=dockerman
  -l net.unraid.docker.webui='http://[IP]:[PORT:5000]'
  -l net.unraid.docker.icon='https://raw.githubusercontent.com/yayitazale/unraid-templates/main/frigate.png'
  -p '5000:5000/tcp'
  -p '8554:8554/tcp'
  -p '8555:8555/tcp'
  -p '8555:8555/udp'
  -p '1984:1984/tcp'
  -p '8971:8971/tcp'
  -v '/mnt/user/appdata/frigate':'/config':'rw,slave'
  -v '/mnt/disks/Surveillance/frigate':'/media/frigate':'rw,slave'
  -v '/mnt/user/frigatedb':'/db':'rw,slave'
  -v '/etc/localtime':'/etc/localtime':'rw'
  --device='/dev/apex_0'
  --device='/dev/dri/renderD128'
  --shm-size=256mb
  --mount type=tmpfs,target=/tmp/cache,tmpfs-size=1000000000
  --restart unless-stopped
  --cap-add=CAP_PERFMON 'ghcr.io/blakeblackshear/frigate:0.17.0-rc2'

Object Detector

Coral

Network connection

Wired

Camera make and model

Amcrest POE Turret/AD410 Doorbell

Screenshots of the Frigate UI's System metrics pages

No response

Any other information that may be helpful

No response

[inkeep-ai-assistant[bot]]

Based on the available documentation, Firefox's behavior with playback buffering at hour boundaries during 16x speed playback isn't directly addressed in the official Frigate documentation. However, there are several relevant considerations:

Firefox has specific codec and streaming technology requirements. Firefox supports h.264 only for MSE (Media Source Extensions) streaming(1), and the MSE live view technology requires specific audio codecs - either PCMA/PCMU or AAC(1).

Your configuration shows you're using AAC audio with the preset-record-generic-audio-copy output args(2), which should be compatible. However, the high-speed playback (16x) combined with Firefox's MSE implementation may be encountering buffering issues at segment boundaries (hour transitions).

Some browser-specific playback issues have been reported. A GitHub issue describes Firefox working better than Chrome for certain camera streams(3), but this was related to live view rather than historical playback at high speeds.

Since Edge works flawlessly at 16x speed but Firefox hangs at hour boundaries, this suggests a browser-specific handling of HLS segments or MSE buffering. The documentation notes that Frigate made HLS optimizations to improve playback startup times(4), but high-speed playback at segment boundaries may still present challenges in Firefox's implementation.

Potential troubleshooting steps:

1. Test at lower playback speeds (8x, 4x) to see if the issue persists
2. Check Firefox's console for any media-related errors during the hang
3. Verify your camera's I-frame interval settings are optimized (should match frame rate)(1)

Unfortunately, the available documentation doesn't provide a specific Firefox configuration fix for this scenario. You may want to report this as a browser-specific playback issue on the Frigate GitHub repository.

📚 Sources:

1. Live View
2. Restream
3. [Support]: Strange issue with Reolink TrackMix & Chrome Browser (Firefox partially works): Live View playback (mse) halts immediately
4. Adaptive bandwidth playback

---

Have another question? Just tag @inkeep.

[hawkeye217]

Frigate doesn't have any specific handling for playback speed other than using the browser's native feature, so if your issue manifests specifically on Firefox at 16x speed, then the issue is not with Frigate but rather something within Firefox's rendering engine.