我在使用Python中的OpenCV 3.1的Ubuntu 16.04中。我可以对大量视频运行良好，但是在此特定视频中却失败了。我正在使用XVID进行编码。URI似乎是正确的，所以我在这里茫然不知所措...
下面是完整的错误（我知道可能需要一些上下文，但是为文件提供的路径是正确的。我尝试在其他建议的结尾处末尾加一个空格，但它没有用。
(240, 320, 3)
Converting all images into a video...
v_HandStandPushups_g01_c01
['', 'media', 'pedro', 'actv3', 'UCF101', 'videos', 'HandstandPushups']
Height: 224 Width: 224 FPS: 25.0
/media/pedro/actv3/UCF101/pose/HandstandPushups/v_HandStandPushups_g01_c01_pose.avi
/media/pedro/actv3/UCF101/pose/HandstandPushups/v_HandStandPushups_g01_c01_joints.npy
(python:1923): GStreamer-CRITICAL **: gst_element_make_from_uri: assertion 'gst_uri_is_valid (uri)' failed
GStreamer Plugin: Embedded video playback halted; module filesink0 reported: Could not open file "/media/pedro/actv3/UCF101/pose/HandstandPushups/v_HandStandPushups_g01_c01_pose.avi" for writing.
GStreamer Plugin: Embedded video playback halted; module filesink0 reported: GStreamer error: state change failed and some element failed to post a proper error message with the reason …