No response from a Sercomm OC835-ADT camera

[gdavids57]

Describe The Problem:
No Response from a configured camera. Using WireShark, I do not see any network traffic to/from the camera and the homebridge server, despite the log showing the proper source URLs for the camera's stream and snapshot features.

To Reproduce:

1. Successfully install plug-in in a functional homebridge environment
2. Enter required configuration information including a source key, http://[camera IP]/img/video.mjpeg
3. Add a camera accessory in Home app on an iPhone
4. Attempt to open the camera and receive no response

Logs:

[27/12/2024, 14:13:22] [Camera FFmpeg] Restarting Process...
[27/12/2024, 14:13:24] [Camera FFmpeg] Launched child bridge with PID 5558
[27/12/2024, 14:13:24] Registering platform 'homebridge-camera-ffmpeg.Camera-ffmpeg'
[27/12/2024, 14:13:24] [Camera FFmpeg] Loaded homebridge-camera-ffmpeg v3.1.4 child bridge successfully
[27/12/2024, 14:13:24] Loaded 0 cached accessories from cachedAccessories.0E2B37011CF2.
[27/12/2024, 14:13:24] [Camera FFmpeg] [Garage] Configuring unbridged accessory...
[27/12/2024, 14:13:24] Homebridge v1.8.5 (HAP v0.12.3) (Camera FFmpeg) is running on port 58981.
[27/12/2024, 14:13:24] Garage 7F73 is running on port 41339.
[27/12/2024, 14:13:24] Please add [Garage 7F73] manually in Home app. Setup Code: 415-03-590
[27/12/2024, 14:25:51] [Camera FFmpeg] [Garage] Failed to fetch snapshot.
[Garage 7F73] Snapshot request handler provided empty image buffer!
[27/12/2024, 14:25:52] [Camera FFmpeg] [Garage] Failed to fetch snapshot.
[Garage 7F73] Snapshot request handler provided empty image buffer!
[27/12/2024, 14:25:54] [Camera FFmpeg] [Garage] Starting video stream: 1280 x 720, 30 fps, 299 kbps
[27/12/2024, 14:25:54] [Camera FFmpeg] [Garage] FFmpeg exited with code: 1 and signal: null (Error)
[27/12/2024, 14:25:54] [Camera FFmpeg] [Garage] Stopped video stream.
[27/12/2024, 14:29:23] [Camera FFmpeg] [Garage] Starting video stream: 1280 x 720, 30 fps, 299 kbps

Additional logging info with homebridge -D enabled
[30/12/2024, 11:26:47] [Camera FFmpeg] [Garage] Snapshot requested: 1280 x 720
[30/12/2024, 11:26:47] [Camera FFmpeg] [Garage] Snapshot command: ffmpeg -i http://192.168.0.199:80/img/snapshot.cgi -frames:v 1 -f image2 - -hide_banner -loglevel error
[30/12/2024, 11:26:47] [Camera FFmpeg] [Garage] Fetching snapshot took 0.339 seconds.
[30/12/2024, 11:26:47] [Camera FFmpeg] [Garage] Failed to fetch snapshot.
[Garage 7F73] Snapshot request handler provided empty image buffer!
[30/12/2024, 11:26:48] [Camera FFmpeg] [Garage] Video stream requested: 1280 x 720, 30 fps, 299 kbps
[30/12/2024, 11:26:48] [Camera FFmpeg] [Garage] Starting video stream: 1280 x 720, 30 fps, 299 kbps
[30/12/2024, 11:26:48] [Camera FFmpeg] [Garage] Stream command: ffmpeg -i http://192.168.0.199:80/img/video.mjpeg -an -sn -dn -codec:v libx264 -pix_fmt yuv420p -color_range mpeg -r 30 -f rawvideo -preset ultrafast -tune zerolatency -filter:v scale='min(1280,iw)':'min(720,ih)':force_original_aspect_ratio=decrease,scale=trunc(iw/2)*2:trunc(ih/2)*2 -b:v 299k -payload_type 99 -ssrc 13821384 -f rtp -srtp_out_suite AES_CM_128_HMAC_SHA1_80 -srtp_out_params 24y7oGFvK4QdLq0+q2WtoahYwuh7uk64ou4lRPZb srtp://192.168.0.131:63238?rtcpport=63238&pkt_size=1316 -loglevel level -progress pipe:1
[30/12/2024, 11:26:49] [Camera FFmpeg] [Garage] FFmpeg exited with code: 1 and signal: null (Error)
[30/12/2024, 11:26:49] [Camera FFmpeg] [Garage] Stopped video stream.

Homebridge Config:

            "name": "Camera FFmpeg",
            "cameras": [
                {
                    "name": "Garage",
                    "manufacturer": "Sercomm",
                    "model": "OC835-ADT",
                    "unbridge": true,
                    "videoConfig": {
                        "source": "-i http://[camera IP]/img/video.mjpeg"
                    }
                }
            ],
            "_bridge": {
                "username": "[user name]",
                "port": 58981
            },
            "platform": "Camera-ffmpeg"

Screenshots:

Environment:

• Node.js Version: v22.12.0
• NPM Version: 10.9.0
• Homebridge Version: v1.8.5
• Homebridge Camera FFmpeg Version: v3.1.4
• Homebridge Config UI X Plugin Version: v4.66.0
• Operating System: Raspbian GNU/Linux Bookworm (12)