Unable to establish a proper stream after upgrade to SDK 5.1

After upgrade prom SDK 5.0 to 5.1 I have problem with GMSL Driver

“GMSL DRIVER”: {

    "GMSL driver": "ii  stereolabs-zedbox-duo                        1.3.2-LI-MAX96712-all-ZEDBOX-L4T36.3.0      arm64        NVIDIA Kernel DTB Modified Package by Stereolabs\\n",

    "error": \[

        "<b>No camera stream</b><br/> Unable to establish a proper stream. Please reboot the device. If the problem persists, contact Stereolabs support."

I am able to start stereo calibration to create calibration configuration file for two ZED One GS cameras and I rename new configuration file to the one with serial number of virtual stereo pair.

After that procedure I start ZED_Media_Server and start STREAM on port 34000. Then I open ZED_Depth_Viewer, go to Open ZED Stream and choose port 34000 instead of 30000. IP Address is 127.0.0.1 (or my local IP address, result is the same) and I receive error in Terminal:

user@machinename:~$ ZED_Depth_Viewer

[2025-11-19 15:21:25 UTC][ZED][INFO] Logging level INFO

[ZED][Streaming] Switching to SHM-boost backend input

[Streaming] Warning : receiving port 34000 is not available (already used)… switching to port 34002. Retrying…

[Streaming] No backward compatibility required.

Opening in BLOCKING MODE

NvMMLiteOpen : Block : BlockType = 279

NvMMLiteBlockCreate : Block : BlockType = 279

[2025-11-19 15:21:26 UTC][ZED][INFO] [Init] Serial Number: S/N 101697159

[2025-11-19 15:21:26 UTC][ZED][INFO] [Init] Fail to load valid Camera calibration, opening the camera in “uncalibrated mode”. Depth and most module are disabled, only recording, streaming and access to unrectified images are possible

[2025-11-19 15:21:26 UTC][ZED][INFO] [Init] Depth mode: NONE

[2025-11-19 15:21:26 UTC][ZED][ERROR] INVALID CALIBRATION FILE in sl::ERROR_CODE sl::camera::open(sl::InitParameters)

With ZEDfu I receive “INVALID CALIBRATION FILE” error.

What can I do to solve this problem?

Thanks!

ZED_Diagnostic_Results.json (20.4 KB)

Please share the calibration file

SN101697159.conf (993 Bytes)

Please save an SVO using ZED Explorer and send it to me.
In this way I can validate your calibration file

HD1080_SN307715506_09-05-31.svo2 (4.9 MB)

HD1080_SN308487885_09-05-50.svo2 (3.0 MB)

You have send the monocular SVO files.
I need the stereo SVO file.
Start the ZED Media Server, then start ZED Explorer and open the virtual stereo camera stream.
Finally save and share the SVO.

This is what I get:

[2025-11-21 11:01:47.532] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:47.733] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:47.937] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:48.140] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:48.340] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:48.546] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:48.749] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:48.950] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:49.157] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:49.358] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:49.560] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:49.763] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:49.965] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:50.165] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:50.368] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:50.575] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:50.791] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:50.995] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:51.198] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.
[2025-11-21 11:01:51.400] [INFO] [GMSLInput.cpp:122] Cannot find a valid camera.

From ZED Media Server or what else?

If I start only ZED Explorer then I can read one camera at the time.

If I take the procedure you advised, start the ZED Media Server then ZED Explorer, I get that message in ZED Explorer terminal.

You must open the virtual camera as a local stream, using the IP address and the port displayed in ZED Media Server

HD1200_SN101697159_12-32-46.svo2 (6.6 MB)

It looks like the calibration is good. I could open the SVO in ZED Depth Viewer. It detected the calibration file and correctly generated the Depth Map and Point Cloud.

Have you copied the conf file to the /usr/local/zed/settings folder?

That was the problem. Calibration file was in wrong place.

Thank you!

1 Like