Publication

Joint Source/FEC Rate Selection for Optimal MPEG-2 Video Delivery

Pascal Frossard
2000
Conference Papers

Abstract

This paper deals with the optimal allocation of MPEG-2 encoding and media-independent FEC rates under a total given bandwidth. The optimality is defined in terms of minimum perceptual end-to-end distortion given a set of video and network parameters. We first derive the set of equations leading to the residual loss process parameters. That is, the packet loss ratio and the average burst length after FEC decoding. We then show that the perceptual source distortion decreases exponentially with the MPEG-2 source rate. We also demonstrate that the perceptual distortion due to data lossis directly proportional to the number of lost macroblocks, and therefore decreases with the amount of channel protection. Finally, we derive the global set of equations that lead to the optimal dynamic rate allocation. The optimal distribution is shown to outperform classical FEC schemes, thanks to its adaptivity to the scene complexity, to the available bandwidth and to the network conditions.

Official source

https://infoscience.epfl.ch/entities/publication/8a2c3443-c66e-4ac2-b02e-2b6fcd49f696

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Pascal Frossard
2000
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/8a2c3443-c66e-4ac2-b02e-2b6fcd49f696

About this result

Related concepts (32)

MPEG-1

MPEG-1 is a standard for lossy compression of video and audio. It is designed to compress VHS-quality raw digital video and CD audio down to about 1.5 Mbit/s (26:1 and 6:1 compression ratios respectively) without excessive quality loss, making video CDs, digital cable/satellite TV and digital audio broadcasting (DAB) practical. Today, MPEG-1 has become the most widely compatible lossy audio/video format in the world, and is used in a large number of products and technologies.

Data compression

In information theory, data compression, source coding, or bit-rate reduction is the process of encoding information using fewer bits than the original representation. Any particular compression is either lossy or lossless. Lossless compression reduces bits by identifying and eliminating statistical redundancy. No information is lost in lossless compression. Lossy compression reduces bits by removing unnecessary or less important information.

MP3

MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) is a coding format for digital audio developed largely by the Fraunhofer Society in Germany under the lead of Karlheinz Brandenburg, with support from other digital scientists in the United States and elsewhere. Originally defined as the third audio format of the MPEG-1 standard, it was retained and further extended — defining additional bit-rates and support for more audio channels — as the third audio format of the subsequent MPEG-2 standard.

Related publications (32)

Joint Source/FEC Rate Selection for Optimal MPEG-2 Video Delivery

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