RK3399 opencv rtsp流报错drm prime is not supported as input pixel format

RK3399板子获取rtsp流报错drm prime is not supported as input pixel format

不要使用ffmpeg,使用gstreamer
编译opencv之前,需要安装gstreamer依赖， cap.open时指定CAP_GSTREAMER

int opened = cap.open("rtsp://admin:[email protected]:554/cam/realmonitor?channel=1&subtype=1",CAP_GSTREAMER);