Temporal Segmentation of MPEG Video Streams

Temporal Segmentation of MPEG Video Streams

Many algorithms for temporal video partitioning rely on the analysis of uncompressed video features. Since the information relevant to the partitioning process can be extracted directly from the MPEG compressed stream, higher efficiency can be achieved utilising information from the MPEG compressed domain. This paper introduces a real time algorithm for scene change detection that analyses the ...

Analysis of MPEG-2 Video Streams

MPEG-2 is widely used as video coding standard for contents such as DVD or digital video broadcasting, DVB. It defines a layered structure, composing three different types of frames into groups for temporal and spatial compression of video information. In this paper we present an exhaustive analysis av various MPEG streams, taken from original DVDs. The purpose is to get a more clear picture ab...

Improving the Delivery Quality of MPEG Video Streams

Real-time Transcoding of Mpeg-2 Video Bit Streams

A method for real-time transcoding of MPEG-2 video bit streams is presented that can be applied at different levels of complexity. The proposed method has been developed in the ACTS ATLANTIC project. It is based on the following elements: • Reuse of motion vectors and coding mode decisions carried in the input bit stream. • Modelling of the impairments already present in the input. • Use of bit...

Bandwidth Allocation and Analysis of VBR MPEG Video Bit Streams

This paper presents the benefits and challenges in the encoding and delivery of variable bitrate (VBR) MPEG video. The network resources required to transmit stored variable rate MPEG can be reduced by properly analyzing and smoothing the video stream before transmission. A scheduling technique is presented which selects a traffic contract for a pre-encoded MPEG video stream with the criteria o...