Otherwise the GST_ERROR message logged in case of ABI mismatch would be done on an uninitialized category. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2918>
constrained-high is high without B-frames, there is no EProfileIdc for this, so assume high instead of hitting an assert down the line. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2919>