Transparent concatenation of MPEG compression

نویسنده

  • N. Wells
چکیده

The MPEG compression standard1 will be used for the distribution of many new digital TV services. Also, MPEG compression is already being used for contributions into the studio, because of bandwidth/bit-rate restrictions on some incoming connections. In addition, there will be pressure to use high levels of compression in future TV archives in order to give on-line access to thousands of hours of programme material. MPEG-2 compression would be a sensible choice for such archives as this standard gives a video compression performance which is difficult to improve upon, given the likely requirements for quality and bit-rate, and for the broad range of picture material to be archived [2].

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Seamless Concatenation - a 21st Century Dream

This paper is about ‘seamless concatenation’ in the world of compressed television signals, especially MPEG2 signals, in the context of the session title ‘How tightly can we squeeze?’. The paper title has a deliberate ambiguity. It can mean the seamless concatenation of MPEG2 bitstreams to create a splice or edit, for example to insert an advertisement into an existing bitstream. It can also me...

متن کامل

Digital Audio: from Lossless to Transparent Coding

We have seen rapid progress in high-quality compression of wideband audio signals. Today’s coding algorithms can achieve substantially more compression than was thought possible only a few years ago. In the case of audio coding with its bandwidth of 20 kHz and more, the concept of perceptual coding has paved the way for significant bit rate reductions. However, multiple codings can reveal origi...

متن کامل

Mpeg - 4 Als

Although modern lossy coding standards such as MP3 or AAC can achieve high compression ratios with transparent subjective quality, they do not preserve every single bit of the original audio data. Lossy coding methods are not suitable for editing or archiving purposes, since multiple coding or post-processing can reveal originally masked distortions. A new emerging standard MPEG-4 ALS introduce...

متن کامل

A Tutorial on MPEG/ Audio Lompression

Davis Pan Motorola This tutorial covers the theory behind MPEG/audio compression. While lossy, the algorithm often can provide “transparent,” perceptually lossless compression even with factors of 6-to-1 or more. It exploits the perceptual properties of the human auditory system. The article also covers the basics of psychoacoustic modeling and the methods the algorithm uses to compress audio d...

متن کامل

A New Unequal Error Protection Technique Based on the Mutual Information of the MPEG-4 Video Frames over Wireless Networks

The performance of video transmission over wireless channels is limited by the channel noise. Thus many error resilience tools have been incorporated into the MPEG-4 video compression method. In addition to these tools, the unequal error protection (UEP) technique has been proposed to protect the different parts in an MPEG-4 video packet with different channel coding rates based on the rate...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1999