Instead of always adding a new one, which means the buffer could end up with multiple sync meta instances. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6942>
Instead of always adding a new one, which means the buffer could end up with multiple sync meta instances. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6942>