Without a parent class,the documentation would need to be duplicated for every CODECs. This patch adds an abstract class in between GstVideoDecoder and the element. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3311>
Default compliance mode (i.e., FF_COMPLIANCE_NORMAL) might not strictly follow specification. This property will allow user to specifiy expected compliance mode. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3311>