error for getting calibration output

[FereshtehFeiz]

Hello, thank you for this work, I want to have an idea about how will be the output.
I want to run the code in the colab:
https://colab.research.google.com/drive/1LvhTnsOw3MnVR5YDOP8euNbcpMvzdUC8?usp=sharing
to get the calibration_matrix.yaml file, while I got this below error:
[ WARN:0] global /tmp/pip-req-build-7m_g9lbm/opencv/modules/videoio/src/cap_v4l.cpp (893) open VIDEOIO(V4L2:/dev/video0): can't open camera by index OpenCV: FFMPEG: tag 0x5634504d/'MP4V' is not supported with codec id 12 and format 'mp4 / MP4 (MPEG-4 Part 14)' OpenCV: FFMPEG: fallback to use tag 0x7634706d/'mp4v' Traceback (most recent call last): File "camera_calibration.py", line 103, in <module> record_video(width=1280, height=720, fps=30) File "camera_calibration.py", line 24, in record_video for idx, frame in enumerate(source): File "/content/gaze-tracking-pipeline/webcam.py", line 30, in __iter__ raise StopIteration StopIteration
I appreciate let me know how I can fix this issue.
Thanks

[ahmed-rebai]

hello i'm facing the same problem did you fix it ??