jkjung-avt
commented
2 years ago If your modification works OK, keep it. The problem seems to be that "cv2" does not know how to decode your video file.
Closed tingriley closed 2 years ago
jkjung-avt
commented
2 years ago If your modification works OK, keep it. The problem seems to be that "cv2" does not know how to decode your video file.
Hi, Thank you very much for your great work. I am able to run yolov4 detection with a single image or from a USB camera. However, if the input source is a video file, then it raises the following errors.
nvbuf_utils: Could not get EGL display connection Opening in BLOCKING MODE NvMMLiteOpen : Block : BlockType = 261 NVMEDIA: Reading vendor.tegra.display-size : status: 6 NvMMLiteBlockCreate : Block : BlockType = 261 [ WARN:0] global /tmp/pip-install-v8b457ln/opencv-contrib-python_6c4a43c632ab4215b62744e5ad267fcf/opencv/modules/videoio/src/cap_gstreamer.cpp (1761) handleMessage OpenCV | GStreamer warning: Embedded video playback halted; module qtdemux0 reported: Internal data stream error. [ WARN:0] global /tmp/pip-install-v8b457ln/opencv-contrib-python_6c4a43c632ab4215b62744e5ad267fcf/opencv/modules/videoio/src/cap_gstreamer.cpp (888) open OpenCV | GStreamer warning: unable to start pipeline [ WARN:0] global /tmp/pip-install-v8b457ln/opencv-contrib-python_6c4a43c632ab4215b62744e5ad267fcf/opencv/modules/videoio/src/cap_gstreamer.cpp (480) isPipelinePlaying OpenCV | GStreamer warning: GStreamer: pipeline have not been created WARNING:root:Camera: starting while cap is not opened! ERROR: failed to open camera!
This issue can be solved by adding the following code to utils/camera.py pipeline = 'filesrc location=%s ! decodebin ! ' % self.video_file
cvt_pipeline = ( 'nvvidconv interpolation-method=5 ! ' 'video/x-raw, format=BGRx !' 'videoconvert ! appsink sync=false' ) stream = pipeline + cvt_pipeline self.cap = cv2.VideoCapture(stream)
Do you have any idea how this is caused? Thank you!