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我試圖開發一個應用程序,它應該分析來自MIPI攝像機(500萬像素)的視頻流。因此,我正在使用gstreamer使用OpenCV獲取視頻供稿。我嘗試了以下的管道,它的工作:使用OpenCV訪問攝像機(通過GStreamer)
imxv4l2videosrc device="/dev/video0" ! autovideosink
但是,當我嘗試使用OpenCV的使用它,它給了一些錯誤。
VideoCapture cap("imxv4l2videosrc device=\"/dev/video0\" ! autovideosink");
OpenCV Error: Unspecified error (GStreamer: cannot find appsink in manual pipeline
) in cvCaptureFromCAM_GStreamer, file /root/OpenCV/opencv/modules/videoio/src/cap_gstreamer.cpp, line 759
VIDEOIO(cvCreateCapture_GStreamer (CV_CAP_GSTREAMER_FILE, filename)): raised OpenCV exception:
/root/OpenCV/opencv/modules/videoio/src/cap_gstreamer.cpp:759: error: (-2) GStreamer: cannot find appsink in manual pipeline
in function cvCaptureFromCAM_GStreamer
然後我試着用下面的管道,它不工作,以及:
VideoCapture cap("imxv4l2videosrc device=\"/dev/video0\" ! appsink");
ERROR: unrecognized std! 0 (PAL=ff, NTSC=b000
ERROR: v4l2 capture: unsupported ioctrl!
GStreamer Plugin: Embedded video playback halted; module imxv4l2videosrc0 reported: Internal data flow error.
ERROR: v4l2 capture: unsupported ioctrl!
OpenCV Error: Unspecified error (GStreamer: unable to start pipeline
) in cvCaptureFromCAM_GStreamer, file /root/OpenCV/opencv/modules/videoio/src/cap_gstreamer.cpp, line 832
VIDEOIO(cvCreateCapture_GStreamer (CV_CAP_GSTREAMER_FILE, filename)): raised OpenCV exception:
/root/OpenCV/opencv/modules/videoio/src/cap_gstreamer.cpp:832: error: (-2) GStreamer: unable to start pipeline
in function cvCaptureFromCAM_GStreamer
的GStreamer版本:1.0 OpenCV的版本:3.2
什麼是一塊,我很在這裏失蹤? 或者我的方法是錯誤的?
可能重複和解決方案爲:http://stackoverflow.com/questions/23570572/using-custom-camera-in-opencv-via-gstreamer – GroovyDotCom
@GroovyDotCom,我已經嘗試過你在這裏提到的帖子。但mfw_v4lsrc不起作用。它說:警告:錯誤的管道:沒有元素「mfw_v4lsrc」。 – KTB
你可以用'videoconvert'元素來試試嗎? :'VideoCapture cap(「imxv4l2videosrc device = \」/ dev/video0 \「!videoconvert!appsink」);' –