HIGHGUI ERROR: V4L

[Wepamat]

Hello,

I do have a Problem running your code on my raspberry pi3.
I installed:
Node.js v0.12.15
OpenCV v2.4.13 (compiled on the Rasperry without error)
These two were necessary to run the npm install which also worked fine.

However, when I run the server.js script with node, I get the following Error as soon as I open the localhost website:
``
`
root@raspberrypi:/home/pi/face-detection-node-opencv/server# node server.js
/dev/video0 does not support memory mapping
munmap: Invalid argument
munmap: Invalid argument
munmap: Invalid argument
munmap: Invalid argument
Unable to stop the stream.: Bad file descriptor
munmap: Invalid argument
munmap: Invalid argument
munmap: Invalid argument
munmap: Invalid argument
HTTP server listening on port 8080
GET /favicon.ico 200 18.167 ms - 410
HIGHGUI ERROR: V4L: Initial Capture Error: Unable to load initial memory buffers.
OpenCV Error: Bad flag (parameter or structure field) (Unrecognized or unsupported array type) in cvGetMat, file /build/opencv-ISmtkH/opencv-2.4.9.1+dfsg/modules/core/src/array.cpp, line 2482
HIGHGUI ERROR: V4L: Initial Capture Error: Unable to load initial memory buffers.
/home/pi/face-detection-node-opencv/server/lib/routes/socket.js:24
if (err) throw err;
^
Error: /build/opencv-ISmtkH/opencv-2.4.9.1+dfsg/modules/core/src/array.cpp:2482: error: (-206) Unrecognized or unsupported array type in function cvGetMat

at Error (native)

`
``

The results I got by using google didn't help me too much.
I tried installing the v4l2 driver but I guess it is included with raspbian anyway and doesn't help.

Any idea on that?
Would be really appreciated

[estherjk]

Unfortunately, I'm unsure of what this error could be. I don't have a RPi3 to test on either. :/

[kirax999]

i'm look your code for test i'm comment line 24 to 31 in socket.js/ .

after comment line i'm get other error message

VIDIOC_QBUF: Invalid argument
OpenCV Error: Unknown error code -10 (Raw image encoder error: Empty JPEG image (DNL not supported)) in throwOnEror, file /home/pi/Desktop/camera/opencv-3.2.0/modules/imgcodecs/src/grfmt_base.cpp, line 139
terminate called after throwing an instance of 'cv::Exception'
what(): /home/pi/Desktop/camera/opencv-3.2.0/modules/imgcodecs/src/grfmt_base.cpp:139: error: (-10) Raw image encoder error: Empty JPEG image (DNL not supported) in function throwOnEror