to also support CRF intervals like every 1,333,333ns 64 events Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1073>
in case of CRF AVTPDUs with single CRF timestamp. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1076>