3.4.2 cannot open and create videos, but with 3.4.1 I can

I am using ArchLinux. My system just got updated to OpenCV 3.4.2-1. When I try to read or create a video, it outputs this error message: python:15977): GStreamer-CRITICAL **: 18:19:37.484: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed Unable to stop the stream: Inappropriate ioctl for device If I downgrade Opencv to 3.4.1-3 then it works fine. I am using *XVID. Running with export OPENCV_VIDEOIO_DEBUG=TRUE [juanma@juanmahostname img_proc]$ export OPENCV_VIDEOIO_DEBUG=TRUE [juanma@juanmahostname img_proc]$ python test_svm.py pat00100_2_fast15.avi [ WARN:0] VIDEOIO(createGStreamerCapture(filename)): trying ... (python:11745): GStreamer-CRITICAL **: 09:24:32.751: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed [ WARN:0] VIDEOIO(createGStreamerCapture(filename)): result=(nil) isOpened=-1 ... [ WARN:0] VIDEOIO(cvCreateCameraCapture_V4L(filename.c_str())): trying ... Unable to stop the stream: Inappropriate ioctl for device [ WARN:0] VIDEOIO(cvCreateCameraCapture_V4L(filename.c_str())): result=(nil) ... [ WARN:0] VIDEOIO(cvCreateFileCapture_Images(filename.c_str())): trying ... [ WARN:0] VIDEOIO(cvCreateFileCapture_Images(filename.c_str())): result=(nil) ... [ WARN:0] VIDEOIO(createMotionJpegCapture(filename)): trying ... [ WARN:0] VIDEOIO(createMotionJpegCapture(filename)): result=(nil) isOpened=-1 ... [ WARN:0] VIDEOIO(createGPhoto2Capture(filename)): trying ... [ WARN:0] VIDEOIO(createGPhoto2Capture(filename)): result=(nil) isOpened=-1 ... [ WARN:0] VIDEOIO(cvCreateVideoWriter_GStreamer (filename.c_str(), fourcc, fps, frameSize, isColor)): trying ... (python:11745): GStreamer-CRITICAL **: 09:24:32.792: gst_element_make_from_uri: assertion 'gst_uri_is_valid (uri)' failed [ WARN:0] VIDEOIO(cvCreateVideoWriter_GStreamer (filename.c_str(), fourcc, fps, frameSize, isColor)): result=0x564e3cfc57d0...