CompuServe Messages

transcoders

    01-Sep-93 16:17:22
Sb: #55780-transcoders
Fm: Mike Kelley 71302,73
To: Marion K. Marks 70700,2777
>So it is with video: in addition to the doubling of pixel resolution needed to >resolve lines, for absolute best results you should double AGAIN because of the >Nyquist aliasing phenomenon. Thus, the ATVista 1512×486 mode, which is >756×486 doubled. Particularly with fine details and small text, you will notice the >difference. Ah, finally a part of the discussion I understand. All seriousness aside, I do appreciate the technical background, even if it's FAR over my head. But the end comment is something I can deal with — I made tests that have demonstrated that, to my eye, I can detect no appreciable difference on material recorded at any higher resolution than 640 by 480. Now, that may mean my board doesn't support a higher resolution, but I doubt it (it will display just about any resolution correctly) — but I'm not really worried. Perhaps it's just the limitation of SVHS that I'm seeing. My tests look so good that, if there's a better way of doing it, I'm not losing any sleep over it. However, I do appreciate all the feedback everyone has given.