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post #27 of (permalink) Old 2015-08-04, 12:05 PM
BassLake
 
Join Date: Jan 2007
Location: Ottawa
Posts: 45
An interesting find from HighDef Forum.

These are the real uncompressed numbers of HD. Not broadcast but the true bandwidth it takes to move an HD signal around before it gets squeezed down for broadcast.

Raw uncompressed bandwidth of 1080i HD? - High Def Forum - Your High Definition Community & High Definition Resource

SD is
858 * 525 * 29.97 * 20 = 269,999,730 bits or 270Mbps

720 HD is
1650 * 750 * 59.94 * 20 = 1,483,515,000 or 1.4835Gbps

1080 30 frame HD is
2200 * 1125 * 29.97 * 20 = 1,483,515,000 or 1.4835Gbps

1080 60 frame HD is
2200 * 1125 * 59.94 * 20 = 2,967,030,000 or 2.967Gbps
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