Stability Issue with Multi Body Tracking

Software Unreal Engine
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1

Hi,

I’m experiencing a systematic camera feed freeze when using the ZED Unreal Engine sample project. After a few hours, the camera feed displayed in the UI stops updating and body tracking no longer works.

I also tested the Live Link plugin separately, before one hour has passed it returns:
[Sample] error grab. Exit program in loop. At this point, body tracking also stops working.

I tried multiple configurations without success:

  • SDK 5.2 + CUDA 12 + Unreal 5.6

  • SDK 5.2 + CUDA 13 + Unreal 5.6

  • SDK 5.3 + CUDA 12 + Unreal 5.6

  • SDK 5.3 + CUDA 13 + Unreal 5.6

I am using Unreal Engine with DirectX 11.

Additional notes:

  • I’m using a USB 3.0 cable, not USB 3.1.

  • When building the Sender Mono app for the Live Link Pipeline, I had to replace:
    input.setFromSerialNumber(serial_number, sl::BUS_TYPE::GMSL); with:
    input.setFromSerialNumber(serial_number); to compile successfully.

The issue happens on untouched default sample projects after a few hours, not only on my own project. I already built an application using the ZED camera, but I’m now realizing the setup is very unstable for long-running use, which is worrying for my installation.

Does anyone know what could cause this or how to improve long-term stability?

Thanks a lot.

2

The main issue in my case is that the camera feed freezes, which prevents body tracking from working in the ZED UE Project Sample. Today, I’ll try using another computer with a USB 3.1 cable.

Here is the file returned by ZED Diagnostic on my current setup:

ZED_Diagnostic_Results.json (17.4 KB)

3

I’m getting the same result on another media server using SDK 5.3, the UE ZED sample project, and a USB 3.1 cable. The camera freezes after about 4 hours of runtime.