Temporal direct mode: Currently not supported, so that most of the AVC conformance bitstreams cannot be decoded (in SVC, the temporal direct mode is not supported).
Error detection and error concealment: The error detection and error concealment code had been temporarily removed, so that all validation scripts that simulate packet losses fail. – The previously implemented code assumed a fixed GOP structure (by analyzing the parameters of the first two access units) and only worked for 2 layers. It was reported that it should be tried to implement the error detection and concealment in a more general way.
