I was following this website (link below) to focus the lens of PX4Flow sensor. I could upgrade firmware for PX4Flow sensor using Qgroundcontrol. Although I cannot find > Tool Widgets → Video Downlink
According to some websites, older versions such as Qgroundcontrol (v2.8.0) used to have this option. Is it no longer available on newer version?
The UI for PX4flow video in new version of QGC has been changed.
There is a dedicated PX4flow button on the left panel when PX4flow board is detected.
the video will automatically show up in the center of screen when flow board is connected with QGC.