I have added support for FPD link iii camera : UB954/UB953 Ser/bes and IMX 290 sensor for Camera previews.
When i use additional Webcam from Logitech USB camera overwrites /dev/video1 node which was assigned to FPD link iii.
Thus, we find hang when preview is attempted.
Preview command for FPD : gst-launch-1.0 nvarguscamerasrc sensor_id=<sen_id> ! nvvidconv !
Preview command for USB webcam : gst-launch-1.0 -v v4l2src device=/dev/video<dev_num> ! glimagesink
Thanks in advance for any help on this.