Hi, I'm having the following error which I didn't get in 2017b:
Error using VideoReader/init (line 611) Video file I/O requires Gstreamer 1.0 and higher. Install this on your system and restart MATLAB.
Error in VideoReader (line 176) obj.init(fileName);
I tried this command outside Matlab and it works: gst-launch-1.0 playbin uri=file:[filename]