VideoWriter OpenCV - 无法在函数中播放管道 CvVideoWriter_GStreamer::open

Question

几乎完全相同的问题：OpenCV error - cannot put pipeline to play in function CvVideoWriter_GStreamer::open

上下文：我正在尝试使用 OpenCV 3.3.0 和 Python 2.7.

创建视频并将其保存在 .avi 文件中

问题：这段代码：

fourcc = cv2.VideoWriter_fourcc(*'XVID')
out = cv2.VideoWriter('data/out/output.avi', fourcc, 30, (800, 600))

加薪：

(python2.7:12345): GStreamer-CRITICAL **: gst_element_make_from_uri: assertion 'gst_uri_is_valid (uri)' failed

** (python2.7:12345): CRITICAL **: gst_ffmpeg_cfg_set_property: assertion 'qdata->size == sizeof (gint64)' failed 
OpenCV Error: Unspecified error (GStreamer: cannot put pipeline to play ) in CvVideoWriter_GStreamer::open, file /soft/OpenCV3.3/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp, line 1690
VIDEOIO(cvCreateVideoWriter_GStreamer (filename, fourcc, fps, frameSize, is_color)): raised OpenCV exception:

cap_gstreamer.cpp:1690: error: (-2) GStreamer: cannot put pipeline to play
 in function CvVideoWriter_GStreamer::open

问题：如何解决这个问题，以便我可以使用 OpenCV 编写视频文件？

Answer 1

在 VideoWriter 的构造函数中不使用路径解决了问题。

out = cv2.VideoWriter('output.avi', fourcc, 30, (800, 600))

VideoWriter OpenCV - 无法在函数中播放管道 CvVideoWriter_GStreamer::open

VideoWriter OpenCV - cannot put pipeline to play in function CvVideoWriter_GStreamer::open

python

opencv

ffmpeg

gstreamer