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« How long until....Netflix »
This is a sub-selection from But how lossy?


Guspaz
Guspaz
Premium,MVM
join:2001-11-05
Montreal, QC
kudos:23
reply to SunnyD

Re: But how lossy?

That depends entirely on the bitrate. Blu-ray is typically perceptually lossless (humans can't tell it apart from the uncompressed original), but it's using much higher bitrates (up to 40 Mbps for BD versus ~10 Mbps for DVD) and a much more efficient compression algorithm than DVD did (h.264 versus MPEG-2).

The point of a new codec is that it can either provide higher quality at the same bitrate, or the same quality at a lower bitrate. How that reduction in required bitrate is actually used is up to the person doing the encoding. A cable or satellite company could use it either to increase the quality of their existing feeds, or to fit more channels into the same amount of space.
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