From: "Ivar" <avnet@online.no>
Newsgroups: alt.video.laserdisc
Subject: Re: MUSE HiVision LD listing?
Date: Tue, 4 Aug 1998 17:57:52 +0200
Message-ID: <6q7b1h$97t$1@o.online.no>
NNTP-Posting-Host: ti01a23-0014.dialup.online.no

Hi-Vision production/studio format is fairly close to the SMPTE 240E standard.

 Total lines pr. frame: 1125
Active lines pr. frame: 1035
              Scanning: 2:1 interlaced
          Aspect ratio: 16:9 ( academy 1:1.33 material will have black
                        vertical bars )
            Field rate: 60Hz ( not 59.94Hz )

Typically stored as color differential component YPbPr.  If analogue storage,
all components will have 30MHz bandwidth, not just the luma component.  If
digital storage is used the chroma component are normally subsampled so the
chroma bandwidth is reduced to 15MHz because of storage limitation.

DIGITAL STORAGE INFORMATION Y CHANNEL

       Total pixels pr line: 2200
Total active pixels pr line: 1920
           Pixel clock rate: 74.25MHz
The transfer function ( gamma ) is slightly different to standard resolution,
and so are the chromatic references of the primaries ( the color triangle ).
Which of cause causes the formula for Y, Cb and Cr to be slightly different
from YUV.

MUSE CODEC

Luma bandwidth; in stationary portions of the picture 22MHz; in moving
portions of the picture 16MHz.  The color differential signals have 7.2MHz
bandwidth for the stationary part and 4MHz for the moving portions.  Yes, MUSE
is a component differential format, not a composite format.  In pixel terms
the stationary portion of the picture roughly equals 1440 x 1035.  The
resulting bandwidth of the decoded signal is dependent on the encoder and the
decoder.  There have been many updates both to the encoder and the decoder,
especially the encoder.

The non active lines are used for transferring sound and other data like
motion vectors.  There are two possible sound systems A and B.  A is four
independent channel sound and B is two channel sound (often prologic encoded).
In addition nearly all A encoded movies also have a standard EFM track,
normally prologic encoded.

That is about everything I can think of just now, without getting too nitty
gritty.

Best regards,

Ivar Vikøren.