[BUG] - Plugin does not respect videoConfig parameters

[jlg89]

I have two cameras, both running the latest xiaomi-dafang-hacks firmware (currently 1127052).
One is a WyzeCam V2, the other is a WyzeCam Pan.
Onboard video for both cameras is configured as 768x432, SMART, 10fps, 300kbps.
In homebridge-dafang, the videoConfig block for both cameras matches these parameters.
However, the homebridge log shows that homebridge-dafang is using different parameters when streaming.
The plugin is using a lower resolution (640x360) than specified for the WyzeCam Pan, which is technically OK, but it's using a higher resolution (1280x720) than specified for the WyzeCam V2, which isn't OK.
What's happening here?

homebridge-dafang config block:

{
    "platform": "Dafang",
    "mqtt": {
        "hostBroker": false,
        "port": 1883,
        "host": "localhost",
        "debug": false
    },
    "cameras": [
        {
            "cameraName": "Gate Cam",
            "cameraRTSPStreamUrl": "rtsp://root:[email protected]:8554/unicast",
            "mqttTopic": "yonder-alerts/gatecam/#",
            "folder": "/home/hoobs/cameras/",
            "accessories": [
                {
                    "name": "Record Video - GateCam",
                    "type": "recordVideo"
                },
                {
                    "name": "Capture Image - GateCam",
                    "type": "captureImage"
                },
                {
                    "name": "Reset Streaming - GateCam",
                    "type": "resetFFMPEG"
                },
                {
                    "name": "GateCam Motion Sensor",
                    "type": "richMotionSensor",
                    "threshold": 500000
                }
            ],
            "videoConfig": {
                "source": "-i rtsp://192.168.77.13:8554/unicast",
                "stillImageSource": "-i rtsp://192.168.77.13:8554/unicast -vframes 1 -r 1",
                "maxStreams": 2,
                "maxWidth": 768,
                "maxHeight": 432,
                "maxFPS": 10,
                "audio": false,
                "debug": true
            }
        },
        {
            "cameraName": "Study Cam",
            "cameraRTSPStreamUrl": "rtsp://root:[email protected]:8554/unicast",
            "mqttTopic": "yonder-alerts/studycam/#",
            "folder": "/home/hoobs/cameras/",
            "accessories": [
                {
                    "name": "Record Video - StudyCam",
                    "type": "recordVideo"
                },
                {
                    "name": "Capture Image - StudyCam",
                    "type": "captureImage"
                },
                {
                    "name": "Reset Streaming - StudyCam",
                    "type": "resetFFMPEG"
                },
                {
                    "name": "Recalibrate Motor - StudyCam",
                    "type": "recalibrateSwitch"
                },
                {
                    "name": "StudyCam Motion Sensor",
                    "type": "richMotionSensor",
                    "threshold": 500000
                },
                {
                    "name": "Pan Left - StudyCam",
                    "type": "moveCamera",
                    "axis": "horizontal",
                    "direction": "left"
                },
                {
                    "name": "Pan Right - StudyCam",
                    "type": "moveCamera",
                    "axis": "horizontal",
                    "direction": "right"
                },
                {
                    "name": "Pan Up - StudyCam",
                    "type": "moveCamera",
                    "axis": "vertical",
                    "direction": "up"
                },
                {
                    "name": "Pan Down - StudyCam",
                    "type": "moveCamera",
                    "axis": "vertical",
                    "direction": "down"
                }
            ],
            "videoConfig": {
                "source": "-i rtsp://192.168.77.12:8554/unicast",
                "stillImageSource": "-i rtsp://192.168.77.12:8554/unicast -vframes 1 -r 1",
                "maxStreams": 2,
                "maxWidth": 768,
                "maxHeight": 432,
                "maxFPS": 10,
                "audio": false,
                "debug": true
            }
        }
    ]
}

homebridge log:

9/21/2020, 4:18:40 PM [Dafang] Start streaming video from Gate Cam with 1280x720@299kBit
9/21/2020, 4:18:40 PM ffmpeg -i rtsp://192.168.77.13:8554/unicast -map 0:0 -vcodec libx264 -pix_fmt yuv420p -r 10 -f rawvideo -tune zerolatency -vf scale=1280:720 -b:v 299k -bufsize 299k -maxrate 299k -payload_type 99 -ssrc 748236 -f rtp -srtp_out_suite AES_CM_128_HMAC_SHA1_80 -srtp_out_params lrcu0D5ZKuX8mwtJItVVN/BaA8UpKdb80YgvpfTQ srtp://192.168.77.170:54856?rtcpport=54856&localrtcpport=54856&pkt_size=1316
9/21/2020, 4:19:05 PM [Dafang] Snapshot from Study Cam at 640x360
9/21/2020, 4:19:05 PM ffmpeg -i rtsp://192.168.77.12:8554/unicast -vframes 1 -r 1 -t 1 -s 640x360 -f image2 -
9/21/2020, 4:19:06 PM [Dafang] Stopped streaming
9/21/2020, 4:19:09 PM [Dafang] Start streaming video from Study Cam with 640x360@132kBit
9/21/2020, 4:19:09 PM ffmpeg -i rtsp://192.168.77.12:8554/unicast -map 0:0 -vcodec libx264 -pix_fmt yuv420p -r 10 -f rawvideo -tune zerolatency -vf scale=640:360 -b:v 132k -bufsize 132k -maxrate 132k -payload_type 99 -ssrc 7754990 -f rtp -srtp_out_suite AES_CM_128_HMAC_SHA1_80 -srtp_out_params Zb6Dn6AivPY+nLKc+vo9rACGIAhuj6d56IT5gTPF srtp://192.168.77.170:49777?rtcpport=49777&localrtcpport=49777&pkt_size=1316
9/21/2020, 4:19:36 PM [Dafang] Stopped streaming

[jlg89]

This would probably fix #62 as well.

[jlg89]

See the conclusion of #65