can't capture multicast UDP stream raspberry pi 3B

asked 2018-02-13 08:54:57 -0500

devdev gravatar image

updated 2018-02-13 08:57:33 -0500

berak gravatar image

I'm streaming udp video by using my picamera, using UAVcast. I can get this video from PC, but i can't get the video from raspberry pi. I got this stream in my PC using .sdp file. The same code i run in raspberry pi i get this error:

[rtp @ 0x1368680] Protocol 'rtp' not on whitelist 'file,crypto'!
Unable to stop the stream: Inappropriate ioctl for device
OpenCV(3.4.0-dev) Error: Unspecified error (GStreamer: unable to start pipeline
) in cvCaptureFromCAM_GStreamer, file /home/pi/opencv/modules/videoio/src/cap_gstreamer.cpp, line 890
VIDEOIO(cvCreateCapture_GStreamer (CV_CAP_GSTREAMER_FILE, filename)): raised OpenCV exception:

OpenCV(3.4.0-dev) /home/pi/opencv/modules/videoio/src/cap_gstreamer.cpp:890: error: (-2) GStreamer: unable to start pipeline
 in function cvCaptureFromCAM_GStreamer

OpenCV(3.4.0-dev) Error: Assertion failed (size.width>0 && size.height>0) in imshow, file /home/pi/opencv/modules/highgui/src/window.cpp, line 356
Traceback (most recent call last):
  File "cam3.py", line 19, in <module>
    cv2.imshow('frame',frame)
cv2.error: OpenCV(3.4.0-dev) /home/pi/opencv/modules/highgui/src/window.cpp:356: error: (-215) size.width>0 && size.height>0 in function imshow

I've built opencv with support of gstreamer 0.1 and ffmpeg.

This is cmake results:

"  Video I/O:\n"
"    DC1394:                      YES (ver 2.2.5)\n"

"    FFMPEG:                      YES\n"

"      avcodec:                   YES (ver 58.10.100)\n"

"      avformat:                  YES (ver 58.9.100)\n"

"      avutil:                    YES (ver 56.7.100)\n"

"      swscale:                   YES (ver 5.0.101)\n"

"      avresample:                NO\n"

"    GStreamer:                   \n"

"      base:                      YES (ver 0.10.36)\n"

"      video:                     YES (ver 0.10.36)\n"

"      app:                       YES (ver 0.10.36)\n"

"      riff:                      YES (ver 0.10.36)\n"

"      pbutils:                   YES (ver 0.10.36)\n"

"    libv4l/libv4l2:              NO\n"

"    v4l/v4l2:                    linux/videodev2.h\n"

"    gPhoto2:                     YES\n"

If someone can help to solve this headache problem, i'll be very glad !

Best Regards...

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