Try running <gst-inspect-1.0 -a | grep video/x-h265> to see what all muxers support H265 muxing -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/looking-for-supported-muxers-for-x265enc-tp4682879p4682893.html Sent from the GStreamer-devel mailing list archive at Nabble.com.