How are digital TV programs compressed to allow broadcasting?

  • F. Marqués
  • M. Menezes
  • J. Ruiz-Hidalgo


In 1982, the CCIR defined a standard for encoding interlaced analogue video signals in digital form mainly for studio applications. The current name of this standard is ITU-R BT.601 (ITU 1983). Following this standard, a video signal sampled at 13.5 MHz with a 4:2:2 sampling format (double the number of samples for the luminance component than for the two chrominance components) and quantized with 8 bits per component produces a raw bit rate of 216 Mbps. This rate can be reduced by removing the blanking intervals present in the interlaced analogue signal leading to a bit rate of 166 Mbps, which is still a figure far above the main capacity of usual transmission channels or storage devices.


Motion Vector Reference Image Motion Estimation Video Code Motion Compensation 
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Copyright information

© Springer Science+Business Media New York 2009

Authors and Affiliations

  • F. Marqués
    • 1
  • M. Menezes
    • 2
  • J. Ruiz-Hidalgo
    • 1
  1. 1.Universitat Politècnica de CatalunyaSpain
  2. 2.Instituto Superior de Ciências do Trabalho e da EmpresaPortugal

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