We want to make it so that we prefer a higher, not lower, number of channels. Otherwise, this pipeline would convert from 2 to 1 channels: gst-launch-1.0 audiotestsrc ! audio/x-raw,channels=2 ! opusenc ! queue ! opusdec ! queue ! opusenc ! fakesink Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3494>