No calibration file found for SN XXX. Downloading... runs forever

Software Python
1

Copying from: No calibration file found for SN XXX. Downloading... runs forever · Issue #726 · stereolabs/zed-sdk · GitHub

Preliminary Checks

  • This issue is not a duplicate. Before opening a new issue, please search existing issues.

    This issue is not a question, feature request, or anything other than a bug report directly related to this project.

Description

When I run:

init_params.set_from_svo_file(svo_file)
err = zed.open(init_params)

it outputs:

[2025-10-01 05:02:59 UTC][ZED][INFO] Logging level INFO                                                                                                                                                                
[2025-10-01 05:02:59 UTC][ZED][INFO] [Init]  Depth mode: NONE                                                                                                                                                          
[2025-10-01 05:02:59 UTC][ZED][INFO] [Init]  Serial Number: S/N 17225336                                                                                                                                               
[2025-10-01 05:02:59 UTC][ZED][INFO] [Init]  No calibration file found for SN 17225336. Downloading...

it then gets stuck here and runs forever. I wonder why is it so slow? My network is actually pretty good. I tried using the command line to download from the website as wget -O SN17225336.conf "http://calib.stereolabs.com/?SN=17225336" which is fast.

Steps to Reproduce

init_params.set_from_svo_file(svo_file)
err = zed.open(init_params)

Expected Result

fast calibration file download.

Actual Result

[2025-10-01 05:02:59 UTC][ZED][INFO] Logging level INFO
[2025-10-01 05:02:59 UTC][ZED][INFO] [Init] Depth mode: NONE
[2025-10-01 05:02:59 UTC][ZED][INFO] [Init] Serial Number: S/N 17225336
[2025-10-01 05:02:59 UTC][ZED][INFO] [Init] No calibration file found for SN 17225336. Downloading…

ZED Camera model

ZED

Environment

docker container built based on `nvidia/cuda:12.4.1-cudnn-devel-ubuntu22.04`

Environment (mine)

Ubuntu 22.04, Zed SDK 22.04

For me, I fixed the Zed X this way by manually downloading the calibration file according to Download Calibration File , however it doesn’t work for opening the CameraOne.
I suspect this has something to do with Zed 5.0.7 fix

  • Fixed a TypeError when calling get_camera_information from a ZEDOne with the Python API.
2

Hi @mluogh-xdof
Is the Docker image allowed to access the internet?
Does the camera work outside Docker?

You are using a ZED X camera, CameraOne must be used with ZED X One monocular cameras.

3

Yes, it is connected to the internet. Sorry, the post is not clear. I copied the text from the Github issue, but I am also separately experiencing this. My addition is after “Environment (mine)”.

Yes I am using sl.Camera.open() for the Zed X and sl.CameraOne.open() for the Zed X One GS.

I was able to fix the infinite hang for Zed X by manually downloading the SN___.conf file but that did not work for the CameraOne/Zed X One GS.

4

Please share the ZED X One SVO file with the serial number of the camera.

5

Might I email this to you instead? We are not comfortable sharing data on public forums.

6

Sure. You can send the material to support@stereolabs.com