On Tue, 15 Jan 2002 15:23:18 GMT, "W. Keith McManus"
>> "Neuman - Ruether"
>> news:3c474318.1948152@newsstand.cit.cornell.edu...
>> > >> > You should import graphics preferably as multiples
>> > >> > of 640x480 (NTSC) in order to maintain the proportions
>> > >> > of the image (try importing a circle on a 720 x480
>> > >> > background, and another on a 640x480 background, then
>> > >> > export to tape and watch on a TV - the 720 image will
>> > >> > not look correct...;-).
>David McCall's process is the correct one to follow.
Well, to check all this out, I made four fields
(at 300dpi): 1440x1080, 1280x960, 720x540, and 640x480
with black backgrounds. I did not use the 720x480
proportion, since this WILL result in incorrect graphic
proportions on TV. On these I placed a white circle
about 1/2 height, and four bits of text, also in white
("THEN", "JMLQ", "HOW", and "LHFD" in Times New Roman
[with seraphs...] near the four corners, and a horizontal
line near the top, all proportioned similarly relative
to the backgrounds. Within the circle, in black type,
is the field size. These were places on the Premiere
timeline (Mini-DV, Canopus codec) with 6-second lengths,
and this sequence was repeated. In the second sequence
"flicker removal" and motion (0, 10; 0, -10, for
scrolling) were applied.
Results:
Without motion, 1440x1080 and 1280x960 looked about
the same, both with slight flicker, but noticeably
better than the smaller field sizes; with the 720x540
compared with the 640x480, the first looked quite
irregular on the circle but rendered the type slightly
better.
With motion, all again had slight flicker, and again
the 1440x1080 and 1280x960 looked about the same,
and noticeably better than the smaller two field sizes;
with the 720x540 compared with the 640x480, the results
were (not surprisingly) the same as above.
The very high contrast of the test material exaggerates
the effects seen, but it is evident that in Premiere,
with the conditions set, that using imported graphic
fields of either 1440x1080 or 1280x960 (NTSC) is
preferable to using smaller fields, even when there
is no motion or zooming within the graphic; if large
graphic elements are used in the smaller fields,
640x480 is preferable to 720x540; if text only is
used, 720x540 is preferable to 640x480; if you don't
believe this, try it yourself...! ;-)