Novice Goin to Video
09-Aug-94 09:33:08
Sb: #117158-Novice Goin to Video
Fm: Don Landis 71673,3612
To: John Tissavary 71054,15
What you said is true as a "rule of thumb" Obviously, at comp ratios of 10 to
15 : 1 it must be true. BUT, it takes a trained eye / Captain Sherlock Video
with a BVM type magnifying glass to see it. The vast "majority" of animation
is very clean and looks lossless. Therefore I classify it beta SP quality.
Frame grabbing with the TBC IV is a different story and artifacts are easy to
pick out but still requires a good monitor to do so. I think the consensus in
the broadcast industry is now that anything greater than 3:1 compression is
lossy and not of original broadcast tape format quality. This is one reason
FAST has decided to redesign their DPR for a maximum of 3:1 comp ratio with the
ability to do "off line" at up to 100:1, selectable by the user. They want to
be the best NLE system in the industry.
I have a question for you and others somewhat on the subject: Have you ever
experimented with the pixel size in 3DS? The statement in the 3DS.set file
talks about "ropiness" along the edges. One of the comments I recall Martin
Foster making about the PAR/MAX comparison was that the PAR showed some
"ropiness" on the edges as the artifact he saw. My question is, Could this
artifact be eliminated or reduced by adjustment of this pixel size? I believe
the setting of 1.5 would give higher quality. The default is 1.1. What are
your thoughts on this?