Abstract: A method in a packet-based network like the Internet is provided, which is directed towards packet loss recovery for transmission of a data stream, DS0 in a packet-based network. The method comprises transmitting data packets associated with the data stream, and upon receiving a retransmission request of missing data, retransmitting the missing data applying a selective retransmission of missing data, which may be based on a priority ranking of data types to be retransmitted, performing retransmission if it is determined that missing data will be received in time for display, or performing retransmission with a rate control.

Abstract: There is provided a method for adaptive bitrate (ABR) adjustments in an IP network before making upshift of ABR level of media streams like video for live Over the Top (OTT) distribution. The invention is based on before upshifting of a current ABR level to a higher ABR level for one or more client devices, probing the network system with a higher bitrate of the data stream provided by e.g. replicating data in the data stream, and monitoring network conditions during probing. Based on the probing it is determined if the available resources in the network are sufficient to sustain an upshift of ABR-level for the client device.

Abstract: Systems and methods for video distribution synchronization are described herein. An example method to distribute a media stream over a distribution network to a number of devices may include determining, by one or more computer processors coupled to memory, a common master-client shared time reference Tref. Example methods may include determining a mean intermediate arrival time for first packets of a first type of the media stream, determining respective first playout times for the first packets based on the mean intermediate arrival time and the time reference Tref, associating the first packets with the respective first playout times, and distributing the media stream to the plurality of devices.

Abstract: There is provided a method in a distribution network (200), comprising a central master node 101 for distributing a received media stream DO comprising packets of a first type over the distribution network to a multiple of client devices 151,152,153. The method comprising providing a common master-client shared time reference Tref, and determining a mean intermediate arrival time for received packets of the first type, which is utilized for providing playout time information for the packets together with the time reference Tref.