[Question] Cannot open camera video capture See verbosity level for more details.

[LilyGinger]

Seems that the device is not recognized in Ubuntu18.04 and no serial seems to be the one of the ZED. (NUCi711). Is there some reasons that may cause this problem? Thanks a lot.

[Myzhar]

Hi @jjjmmmxxx
can you copy and paste the result of the $ lsusb command when the camera is connected?

[LilyGinger]

Thanks a lot. Things have been fixed. Something goes wrong with the USB cable. It is not the problem of the camera or this API. Thank u~

[LilyGinger]

Sorry to bother. It seems that I meet another problem. The examples except for the "zed_open_capture_sensors_example" and "zed_open_capture_sync_example" work well. But these two examples failed to run.

[Myzhar]

Can you post the output of the $ lsusb command?

[Myzhar]

Please also verify to have followed correctly the following installation steps:
https://github.com/stereolabs/zed-open-capture#add-udev-rule

If udev rules are not correctly installed the sensors module cannot be accessed without sudo rights

[LilyGinger]

This is the lsusb output:

I tried this process again and I found it's still like that: No available ZED Mini or ZED2 cameras

[LilyGinger]

It does seem something goes wrong when I follow the process for udev rules. When I add sudo before zed_open_capture_sensors_example, everything goes right.

[Myzhar]

Yes, that's because the ZED2i support was still missing in the udev rules.
I fixed it only 2 hours ago when I noticed it, you can pull the new version (v0.4.1) from Github that should fix the problem.
I'm really sorry for this annoying bug.

[LilyGinger]

Thank you very much for your help! I have one last question. Is the ZED2i supports TypeC-TypeC cable? I use the Camera == typeC----USB3.0 ==USB3.0----typeC==computer connection? When I use this connection, it printed like below:

[Myzhar]

Yes, it should work without any problems

[purpledeer111]

Hi,
same message when using ZED mini with debian 11.

$ zed_open_capture_video_example 
Cannot open camera video capture
See verbosity level for more details.

Device seems to be recognized in system

$ lsusb 
...
Bus 001 Device 014: ID 2b03:f681 STEREOLABS ZED-M HID Interface
...

How do I increase verbosity level? I dont see any parameters

    if( !cap.initializeVideo() )
    {
        std::cerr << "Cannot open camera video capture" << std::endl;
        std::cerr << "See verbosity level for more details." << std::endl;

        return EXIT_FAILURE;
    }

Add:
I have noticed that no additional videox entery was created in /dev/ directory

[BhavyanshM]

I have been getting the exact same error with ZED2 on Ubuntu 20.04. Followed all the instructions as mentioned on the README. The C++ node runs and generates data. However, after a while the node freezes and doesn't get any more data from the cameras.

Subsequent attempts at launching the node generate this message, and the node never starts again.

Only a complete computer reboot fixes it, which is a bit annoying because the freezes occur very regularly. Please help. Thank you so much.

[Yelloooowww]

I have the same issue and reboot couldn't help.

[Myzhar]

@Yelloooowww I'm sorry, but the reboot command only works starting from the ZED2 camera model.
The ZED-M does not have the electronic circuit for this behavior.

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment otherwise it will be automatically closed in 5 days

[ernlavr]

I have the same problem as described by a few people above! I've followed the README, running Ubuntu 22.04, also installed udev rules

[Myzhar]

@ernlavr this is a closed issue. Please do not reply to closed issues.
Create a new one with all the required information and eventually tag this issue as a reference.