I can reproduce this issue : gst-launch-1.0.exe filesrc location=av.mkv ! decodebin ! audioconvert ! autoaudiosink but the file is 7G, I dont know how to share it, I have reported a bug here https://gitlab.freedesktop.org/gstreamer/gstreamer/issues/443 -- Sent from: http://gstreamer-devel.966125.n4.nabble.com/