A method comprising: obtaining a stream of a plurality of transport protocol, TP, packets at a media transmitting device, the stream of the plurality of TP packets carrying compressed media data-units that were created by a scalable coding, SC, encoder, each of the plurality of TP packets having an assigned priority level, wherein the stream of the plurality of TP packets comprises at least one packet of a first priority level and at least one packet of a second priority level; assigning a first sequence number (HPr0SN) to a first header field of a plurality of header fields for each of the plurality of TP packets, the assigned first sequence number (HPr0SN) corresponding to a value of a sequence counter (LastHPr0SN); and transmitting the plurality of TP packets toward a media receiving device; wherein the media transmitting device is an intermediate node between an originating media transmitting device and a final media receiving device, the SC encoder being included in the originating media transmitting device; wherein the media transmitting device increments the sequence counter (LastHPr0SN) for each transmitted TP packet of the first priority level; wherein the first sequence number is used by the media receiving device to identify one or more missing TP packets that got lost in a network segment between the media transmitting device and the media receiving device and to request retransmission of missing TP packets from the media transmitting device; wherein each first priority TP packet reflects base layer frames of compressed video data; and wherein the media receiving device is another intermediate node or the final media receiving device. obtaining a stream of a plurality of transport protocol, TP, packets at a media transmitting device, the stream of the plurality of TP packets carrying compressed media data-units that were created by a scalable coding, SC, encoder, each of the plurality of TP packets having an assigned priority level, wherein the stream of the plurality of TP packets comprises at least one packet of a first priority level and at least one packet of a second priority level; assigning a first sequence number (HPr0SN) to a first header field of a plurality of header fields for each of the plurality of TP packets, the assigned first sequence number (HPr0SN) corresponding to a value of a sequence counter (LastHPr0SN); and transmitting the plurality of TP packets toward a media receiving device; wherein the media transmitting device is an intermediate node between an originating media transmitting device and a final media receiving device, the SC encoder being included in the originating media transmitting device; wherein the media transmitting device increments the sequence counter (LastHPr0SN) for each transmitted TP packet of the first priority level; wherein the first sequence number is used by the media receiving device to identify one or more missing TP packets that got lost in a network segment between the media transmitting device and the media receiving device and to request retransmission of missing TP packets from the media transmitting device; wherein each first priority TP packet reflects base layer frames of compressed video data; and wherein the media receiving device is another intermediate node or the final media receiving device.