The hdmi output in the zcu104 board

the hardware:
zcu104 eval board
hdmi cable
the software:
zcu104 v3.0.1 img

I succesfully run the opencv_filters_webcam ipynb, the result image is as followed lastly. But, the hdmi interface doesn’t output, anyone could help me ,thanks very much!!!

Is this request related to this issue?

The zcu104 v3.0.1 img support the hdmi output?

yes,the same question,and I use the zcu104 v3.0.1 img.