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Posted by poldy on 07/13/06 21:16
In article <p_idnVPErNiJzyzZnZ2dnUVZ_qSdnZ2d@comcast.com>,
"Joshua Zyber" <joshzyber@comcast.net> wrote:
> "Jordan" <lundj@earthlink.net> wrote in message
> news:1152457583.351264.201650@75g2000cwc.googlegroups.com...
> > You might want to mention why MPEG2 is a problem... the spec for HDTV
> > broadcast quality is 25mbps, you would think that Blu-Ray wouldn't
> > have
> > a problem with this since the low end for the Blu-Ray (and HD-DVD)
> > spec
> > is 36mbps.
> >
> > The problem is that MPEG2 maxxes out at 19mbps. This is why all the
> > early Blu-Ray movies look like crap. They simply can't push the HDTV
> > resolution fast enough to give a decent picture quality.
>
> Don't forget that all of Sony's Blu-ray releases are also crippled in
> their video bit rates by the need to include space-hogging PCM 5.1
> soundtracks (and that's after the PCM has been downsampled to 16-bit
> resolution). HD DVD uses Dolby Digital Plus and Dolby TrueHD, which take
> up a lot less space for comparable quality, and don't compromise the
> video bit rate.
Um, Blu-Ray supports VC-1 and H.264 (as does HD-DVD). Blu-Ray also can
use both of those surround sound formats. But I didn't think the
Toshiba output TrueHD or the new DTS format yet?
Oh and once dual-layer BD-ROMs are available, they can boost the
bitrates. Or use advanced codecs with the increased capacity.
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