CompuServe Messages

Novice Goin to Video

    09-Aug-94 09:33:08
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?