I would first recommend updating the firmware of your PT20X-USB to ensure that you are using the latest and greatest updates for the camera.
Firmware updates can be acquired using the PTZOptics Firmware Finder and your cameras serial number.
If the issue still occurs after the firmware update and only occurs in ECamm, but not OBS, this would suggest a software issue as your problem.
We are happy to work with you and ECamm to solve this issue in the event there is an issue between the products if needed.
I hope the suggestions above are able to rectify your issue but if not please do not hesitate to return to the forums or reach out to our amazing support team
PTZOptics Support Information
Phone: 1-800-486-5276 x.1004
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I am having the exact problem as described above. I have the same camera - PTZ Optics 20x USB (GEN-2).
Any clarity on this?
Sorry to hear that you are experiencing a video freeze issue with your PT20X-USB-XX-G2 camera.
If you could share some additional information about your setup we'll be able to start identifying any possible causes
We look forward to hearing from you again when you have the opportunity so that we can begin to make suggestions for resolving this issue.