# CVB.py IDS camera stream
**URL:** https://forum.commonvisionblox.com/t/cvb-py-ids-camera-stream/379
**Category:** Python API
**Tags:** genicam
**Created:** [February 21, 2018, 3:18pm UTC](https://forum.commonvisionblox.com/t/cvb-py-ids-camera-stream/379 "2018-02-21T15:18:11Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@michaelbe](https://forum.commonvisionblox.com/u/michaelbe)
#### Post date: [February 21, 2018, 3:18pm UTC](https://forum.commonvisionblox.com/t/cvb-py-ids-camera-stream/379/1 "2018-02-21T15:18:11Z")
Hello,
I am using a IDS camera. I have installed the camera driver as well as the cvb camera driver. Everything should work fine. When I do the following task. everything works:
**import cvb**
**import os**
**import numpy as np**
**import matplotlib.pyplot as plt**
**path = "%CVB%/Drivers/CVuEye.vin"**
**path\_exp = os.path.expandvars(path)**
**device = cvb.DeviceFactory.open(path\_exp)**
**stream = device.stream**
**stream.start()**
**img,status=stream.wait()**
But as soon as I do the folliwing, my Kernel dies. I have no clue what’s the problem. I already changed the format to mono 8 in the ini file.
**img\_mat=cvb.as\_array(img)**
–\> Kernel dies in Spyder
I hope anybody can help me 🙂 Thank you
---
### Author:  [@Andreas](https://forum.commonvisionblox.com/u/Andreas)
#### Post date: [February 22, 2018, 10:32am UTC](https://forum.commonvisionblox.com/t/cvb-py-ids-camera-stream/379/2 "2018-02-22T10:32:03Z")
Hi @michaelbe,
first, there is nothing wrong with your code that is the intended way to use it!
However, crashing the kernel is clearly a bug on our side! As there have been recent changes to CVBpy this might have been fixed. I just checked with my current version and it works fine.
My current version will be available as nightly setup tomorrow!
If the error persists please contact [support@stemmer-imaging.de](mailto:support@stemmer-imaging.de) and tell us:
- OS Version and architecture
- current CVBpy version (includes also dynamic information)
```python
cvb.version()
```
- CVuEye.vin version.
Furthermore you may check with a different device type like “%CVB%\Tutorial\ClassicSwitch.emu”.
---
### Author:  [@michaelbe](https://forum.commonvisionblox.com/u/michaelbe)
#### Post date: [February 22, 2018, 12:12pm UTC](https://forum.commonvisionblox.com/t/cvb-py-ids-camera-stream/379/3 "2018-02-22T12:12:57Z")
Hello Andreas,
thank you very much for your quick response. I have updtated my cvb.py.
When I do the following:
**img\_mat=cvb.as\_array(img)**
I get this error-message:
_failed to create numpy array_
I will update cvb.py tmorrow and try it again.
Thanks
---
### Author:  [@Andreas](https://forum.commonvisionblox.com/u/Andreas)
#### Post date: [February 22, 2018, 12:32pm UTC](https://forum.commonvisionblox.com/t/cvb-py-ids-camera-stream/379/4 "2018-02-22T12:32:00Z")
> [@michaelbe](#):
>
> failed to create numpy array
Yes this one I fixed just today. In tomorrow’s setup it should be gone!
---
### Author:  [@michaelbe](https://forum.commonvisionblox.com/u/michaelbe)
#### Post date: [February 26, 2018, 2:22pm UTC](https://forum.commonvisionblox.com/t/cvb-py-ids-camera-stream/379/5 "2018-02-26T14:22:44Z")
Hello Andreas,
I just tried it again, but it still fails when doing **cvb.as\_array(img)**. I downloaded the cvb.py at the following link.
[https://forum.commonvisionblox.com/t/getting-started-with-cvbpy/241](https://forum.commonvisionblox.com/t/getting-started-with-cvbpy/241)
This may be incorrect. Could you send me a correct link for downloading cvb.py.
Tank you very much.
---
### Author:  [@michaelbe](https://forum.commonvisionblox.com/u/michaelbe)
#### Post date: [February 26, 2018, 2:29pm UTC](https://forum.commonvisionblox.com/t/cvb-py-ids-camera-stream/379/6 "2018-02-26T14:29:33Z")
