[ WARN:0@11.841] global cap.cpp:401 open VIDEOIO(GSTREAMER): trying capture cameraNum=0 ...
[ INFO:0@11.843] global cap_gstreamer.cpp:1412 open OpenCV | GStreamer: v4l2src device=/dev/video0 ! videoconvert ! appsink drop=true
[ INFO:0@11.845] global cap_gstreamer.cpp:1445 open OpenCV | GStreamer: mode - MANUAL
[ WARN:0@15.022] global cap_gstreamer.cpp:1776 open OpenCV | GStreamer warning: Cannot query video position: status=0, value=-1, duration=-1
[ WARN:0@15.022] global cap.cpp:413 open VIDEOIO(GSTREAMER): created, isOpened=1
[ WARN:0@15.022] global cap_gstreamer.cpp:2151 setProperty OpenCV | GStreamer warning: GStreamer: unhandled property
[ WARN:0@15.022] global cap_gstreamer.cpp:2151 setProperty OpenCV | GStreamer warning: GStreamer: unhandled property
[ WARN:0@20.072] global cap_gstreamer.cpp:2847 handleMessage OpenCV | GStreamer warning: Embedded video playback halted; module v4l2src0 reported: Internal data stream error.
[DEBUG:0@20.072] global cap_gstreamer.cpp:2849 handleMessage GStreamer debug: ../libs/gst/base/gstbasesrc.c(3187): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
streaming stopped, reason not-negotiated (-4)
[ WARN:0@20.074] global cap_gstreamer.cpp:1207 startPipeline OpenCV | GStreamer warning: unable to start pipeline
[ WARN:0@20.074] global cap_gstreamer.cpp:1970 setProperty OpenCV | GStreamer warning: no pipeline
error: frame not read from webcam
[ WARN:0@20.107] global cap.cpp:401 open VIDEOIO(GSTREAMER): trying capture cameraNum=0 ...
[ INFO:0@20.107] global cap_gstreamer.cpp:1412 open OpenCV | GStreamer: v4l2src device=/dev/video0 ! videoconvert ! appsink drop=true
