Abstract: A method of processing video data. During a preprocessing stage a plurality of video content datasets in a storage network node, the method calculates coefficient data and encoding decisions of said video content dataset on a per frame basis, said encoding decisions comprising at least some of frame sizes, motion vectors, macroblock quantizers and macroblock layouts partitions (geometry), deleting said coefficient data; storing said encoding decisions in an auxiliary file associated with said video content dataset; during an operative stage: receiving from a client terminal via a communication network a request for streaming a first of said plurality of video content datasets; identifying a respective said auxiliary file associated with said first video content dataset; and utilizing said encoding decisions from said respective auxiliary file to recalculate said coefficient data of said first video content dataset without recalculating a respective said encoding decisions.