Still images not updating when using custom videoFilter

[mickgiles]

Describe The Bug:
When using a custom videoFilter in the config, still images fail to update. The change that introduced this bug was in release 0.1.18 where the videoFilter value is added to the ffmpeg command rather than the default scale values. Specifically v0.1.17...v0.1.18#diff-aa15bf368787a2fc2fbd3f276bdcca87R188

To Reproduce:
Add a custom videoFilter. Mine specifically is "format=nv12|vaapi,hwupload,scale_vaapi=w=1920:h=1080 -bf 0" as I am using hardware encoding for my ffmpeg streaming

Expected behavior:
Still images should update in the app occasionally

Logs:
Happy to provide logs however they don't actually report failures. I can however downgrade to 0.1.17 and it starts working again. Anything above 0.1.18 fails to update unless I remove the custom videoFilter

Show the Homebridge logs here.
Remove any sensitive information.

Homebridge Config:

           "platform": "Camera-ffmpeg",
            "videoProcessor": "/custom/built/bin/ffmpeg",
            "cameras": [
                {
                    "name": "Front Porch",
                    "videoConfig": {
                        "source": "-init_hw_device vaapi=intel:/dev/dri/renderD128 -hwaccel vaapi -vaapi_device /dev/dri/renderD128 -rtsp_transport tcp -re -i rtsp://192.168.1.11:80/cam/realmonitor?channel=1&subtype=0",
                        "stillImageSource": "-rtsp_transport tcp -re -i rtsp://192.168.1.11:80/cam/realmonitor?channel=1&subtype=0",
                        "maxStreams": 3,
                        "maxWidth": 1280,
                        "maxHeight": 720,
                        "maxFPS": 30,
                        "maxBitrate": 1024,
                        "vcodec": "h264_vaapi",
                        "videoFilter": "format=nv12|vaapi,hwupload,scale_vaapi=w=1920:h=1080 -bf 0"
                    }
                },

Screenshots:

Environment:

• Node.js Version: v11.6.0
• NPM Version: 6.13.0
• Homebridge Version: 1.0.4
• Homebridge Camera FFmpeg Version: 0.1.18 or above fails
• Homebridge Config UI X Plugin Version: 4.19.0
• Operating System: Ubuntu

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[mickgiles]

Any updates on this?