2/24/93 (MPEG Version 1.1)

CODE:

(transform.c) The encoding non-intra quantizer function has been
changed to reflect the reference encoder.  This is not to say that the
previous quantizer was incorrect, significantly different, or even
worse; there are advantages (statistical) and disadvantages (biased).
The short.mpg and short.trace have been modified accordingly.

(mpeg.c) The default output name is componentfile0.mpg rather than
componentfile0.M

(stat.c) The statistics now include mean-removed squared error. 
MRSNR calculated based on (E[X^2]-E[X]^2)/E[error^2]
SNR calculated based on E[X^2]/E[error^2].
PSNR calculated based on 255*255/E[error^2].

DOCUMENTATION:

The colorspace section was edited to include more precise matrices and
a description of CCIR-601 versus JFIF style YUV->RGB conversion.

The description on motion estimation is increased, for example, it
describes telescopic motion estimation.  The motion estimation search
window for frame distances greater than one is anchored on the
location of the previous frame's motion vector.

Some printers (non-laserwriters) have been unable to cope with the
doc.ps files, specifically problems occurred in the postscript include
files.  For some reason, Apple laserwriters and ghostscript do not
seem to be afflicted by the above problem.  We have found a change in
the dvi2ps postscript header that seems to fix this problem for Sun
newsprint (and probably other) printers as well.  If this still is a
problem, the raw tex and .ps files are available in the file
MPEGDOCv1.1.tar.Z.  Caution: the special scaling command has different
relative scales for different dvi2ps, dvips programs - can be a factor
of 100 off depending on the version of the header file.