![]() We've successfully run the modified code and here are the results: We've also set up our Raspberry Pi 4 with GStreamer for Buster Version 1.14.4 and OpenVINO 2021.4.2 according to your description. Gst_str = ("filesrc location=" + file_name + " ! decodebin ! video/x-raw ! queue ! videoconvert ! appsink")ĭetectVehicle('bottle-detection.mp4','V') We’ve successfully run your code with some modifications (called a function actually).ĭef detectVehicle(file_name,media_source_type): Glad to know that you’ve successfully displayed the colored vertical bars screen test which indicates that GStreamer is working properly in your system.įor your latest question, it appears to be an issue with your coding. What else could we be missing that is crashing my program? The same program works well on another Raspbian OS (Buster) setup in another microSD Card without OpenVINO.ĭid you setup your Rpi3 with the exact same OS and version libraries I setup on mine? What calls my attention is it won't continue running despite these are only warnings. ![]() opencv/modules/videoio/src/cap_gstreamer.cpp (2057) handleMessage OpenCV | GStreamer warning: Embedded video playback halted module v4l2h264dec0 reported: No valid frames decoded before end of stream I ran my program and again, it crashed with the following WARNINGS: global. # cap = cv.VideoCapture(0) # 0 =capture video from first cameraĬap = cv.VideoCapture(video, cv.CAP_GSTREAMER) # <- THIS LINE Video = ("filesrc location=" + file_name + " ! decodebin ! video/x-raw ! queue ! videoconvert ! appsink") I then updated my code, specifically these lines: def detectVehicle(media_source_type, file_name, show_image): Then after, I installed GStreamer for Buster Version 1.14.4 (from the link you shared above) on my Rasbperry Pi 4 and even tested it by displaying the colored vertical bars screen. I ran sudo apt-get update & sugo apt-get upgrade. Next, please refer to the OpenCV-Python tutorial for more OpenCV Python tutorials.įurthermore, you can refer to the following sample, which uses the gst-launch-1.0 command: Vehicle and Pedestrian Tracking Sample (gst-launch command line). On another note, you may refer to Install GStreamer 1.18 on Raspberry Pi 4 to install the missing dependency. ![]() # gst-launch-1.0 v4l2src device=/dev/video0 ! videoconvert ! videoscale ! video/x-raw, width-640, height=360 ! autovideosink # Extra: Play video in terminal with the following command: Gray = cv.cvtColor(frame, cv.COLOR_BGR2RGB) Gst_str = ("filesrc location=bottle-detection.mp4 ! decodebin ! video/x-raw ! queue ! videoconvert ! appsink")Ĭap = cv.VideoCapture(gst_str, cv.CAP_GSTREAMER) Referring to VideoCapture(index, apiPreference), the apiPreference for GStreamer is CAP_GSTREAMER. Thank you for all your support and will be waiting for your reply. Please let me know what I need to do (I will appreciate detailed steps), to fix this issue. Installed OpenVINO following this link.The following is installed in my Raspberry Pi 4 (4GB RAM): I believe I already had ffmpeg installed but I tried installing it again anyway as follows:įfmpeg is already the newest version (7:4.1.8-0+deb10u1+rpt1).Ġ upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Libgstreamer1.0-0/oldstable,now 1.14.4-1 armhf Libgstreamer-plugins-base1.0-0/oldstable,now 1.14.4-2+deb10u1 armhf Libgstreamer-plugins-bad1.0-0/oldstable,now 1.14.4-1+rvt+deb10u2 armhf Gstreamer1.0-plugins-good/oldstable,now 1.14.4-1+rpt1+deb10u1 armhf Gstreamer1.0-plugins-base/oldstable,now 1.14.4-2+deb10u1 armhf Gstreamer1.0-plugins-bad/oldstable,now 1.14.4-1+rvt+deb10u2 armhf Gstreamer1.0-omx/oldstable,now 1.14.4-1+rpt1 armhf Gstreamer1.0-omx-rpi/oldstable,now 1.14.4-1+rpt1 armhf ![]() Gstreamer1.0-omx-rpi-config/oldstable,now 1.14.4-1+rpt1 armhf WARNING: apt does not have a stable CLI interface. opencv/modules/videoio/src/cap_gstreamer.cpp (597) isPipelinePlaying OpenCV | GStreamer warning: GStreamer: pipeline have not been createdĮRROR: Unable to read from webcam. opencv/modules/videoio/src/cap_gstreamer.cpp (1034) open OpenCV | GStreamer warning: unable to start pipeline I just experienced a GStreamer error when tried to initiate opencv with cv2.VideoCapture('').
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