Device-USB-Camera Service unable to stream

[soumya-ks]

Hello All,

I am bringing up the device-usb-camera service on the EdgeX, pretty much using https://github.com/edgexfoundry/device-usb-camera/blob/main/docs/guides/SimpleStartupGuide.md
 but just that I am not using the docker here for EDGEX, I have it
running in my local machine. All goes well and I am able to detect the
Integrated camera and I am able to fetch all the camera information and
metadata.
Once the device usb camera service is up, I give the curl command:

curl -X PUT -d '{ "StartStreaming": { "InputPixelFormat": "yuyv422", "InputFps": "30", "InputImageSize": "640x360", "OutputVideoQuality": "5", "OutputVideoCodec": "h264" } }' http://localhost:59882/api/v2/device/name/Integrated_Camera_Integrated_C-SunplusIT_Inc_Integrated_Camera/StartStreaming

I however get the error

error writing DeviceResourece StartStreaming for Integrated_Camera_Integrated_C-SunplusIT_Inc_Integrated_Camera -\\u003e the video streaming process for device Integrated_Camera_Integrated_C-SunplusIT_Inc_Integrated_Camera has stopped, error: Failed Finish FFMPEG ([-nostats -loglevel 0 -y -r 30 -s 640x360 -input_format yuyv422 -i /dev/video0 -qscale 5 -vcodec h264 -f rtsp -hls_list_size 0 rtsp://localhost:8554/stream/Integrated_Camera_Integrated_C-SunplusIT_Inc_Integrated_Camera]) with exit status 1 message

I am however able to independently stream the camera input to an rtsp server using the command:

ffmpeg -f v4l2 -input_format yuyv422 -framerate 30 -video_size 640x360 -i /dev/video0 -c:v libx264 -vf format=yuv420p -f rtsp rtsp://localhost:8554/live.stream
Failed Finish in FFMPEG is indicative of what error in transcoder? I tried with different input and output formats too. Any help is greatly appreciated.

Many Thanks in advance,
Soumya