ros2 run image_tools cam2image后报错

幸川

[ WARN:0] global ../modules/videoio/src/cap_gstreamer.cpp (1758) handleMessage OpenCV | GStreamer warning: Embedded video playback halted; module v4l2src0 reported: Cannot identify device '/dev/video0'.
[ WARN:0] global ../modules/videoio/src/cap_gstreamer.cpp (888) open OpenCV | GStreamer warning: unable to start pipeline
[ WARN:0] global ../modules/videoio/src/cap_gstreamer.cpp (480) isPipelinePlaying OpenCV | GStreamer warning: GStreamer: pipeline have not been created
[ WARN:0] global ../modules/videoio/src/cap_v4l.cpp (887) open VIDEOIO(V4L2:/dev/video0): can't open camera by index
[ERROR] [1709220829.313137597] [cam2image]: Could not open video stream
terminate called after throwing an instance of 'std::runtime_error'
what(): Could not open video stream

小鱼

@651077487 在 ros2 run image_tools cam2image后报错中说：

[ERROR] [1709220829.313137597] [cam2image]: Could not open video stream
terminate called after throwing an instance of 'std::runtime_error'
what(): Could not open video stream

没权限还是不存在？

此间

@小鱼我也是报了相同的错误，一样的错误不知道如何解决