For VP8 and VP9, width+height changes are signalled inband. Refs https://github.com/Kurento/bugtracker/issues/535 and https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1047/diffs?commit Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1657>