无法使用 openccv 打开视频文件

[toybrick@MiWiFi-R2D-srv Linux_rknn_api_sdk_new]$ ./a.out
Failed to query video capabilities: Inappropriate ioctl for device
libv4l2: error getting capabilities: Inappropriate ioctl for device
VIDEOIO ERROR: V4L: device ./1550279248737094.avi: Unable to query number of channels
OpenCV(3.4.1) Error: Unspecified error (GStreamer: your gstreamer installation is missing a required plugin
) in handlemessage, file /builddir/build/BUILD/opencv-3.4.1/modules/videoio/src/cap_gstreamer.cpp, line 1869
VIDEOIO(cvCreateCapture_GStreamer (CV_CAP_GSTREAMER_FILE, filename)): raised OpenCV exception:

OpenCV(3.4.1) /builddir/build/BUILD/opencv-3.4.1/modules/videoio/src/cap_gstreamer.cpp:1869: error: (-2) GStreamer: your gstreamer installation is missing a required plugin
in function handlemessage

open mp4 file failed!
[toybrick@MiWiFi-R2D-srv Linux_rknn_api_sdk_new]$

chuyee 发表于 2019-2-18 04:10
dnf install gstreamer1-libav

这个问题我已经问过了哈，详见：http://t.rock-chips.com/forum.php?mod=vi ...

提示找不到这个包啊？确认没敲错？