Darren New <dne### [at] sanrrcom> wrote:
> scott wrote:
> > Anyway, there are also compression algorithms that are a lot more 
> > efficient than the one used on DVDs. So in theory you could get DVD 
> > quality with a lot less than 9 MBit/s if you use a better compression 
> > algorithm.

> Indeed. A 10:1 improvement in compression is easily attainable without 
> noticable loss compared to DVD compression anyway.

  10 times smaller than MPEG-2 with the same visual quality? Now that,
I think, would be quite hard.

  Maybe if the MPEG-2 had been created with a crappy software (thus
requiring plenty of bitrate) and then you used really aggressive H.264
encoding settings (something like requiring 24 hours of encoding time
for each hour of video or such), perhaps. But under normal circumstances
10:1 feels a bit excessive.

  Could you take a 1.5-hour 4GB DVD-quality MPEG-2 and make a 400MB H.264
from it with the same resolution and without visible loss of quality?

-- 
                                                          - Warp

Post a reply to this message