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Credit Roll looks good in PAL, not in NTSC
Hi,
I built a Credit Roll in AE7 that looks great in PAL 10bit. Laid out the credits in Illustrator, imported them into AE, turned on Motion Blur, applied a vertical Fast Blur set to 0.3 and Reduce Interlace Flicker set to 0.5. It renders out fine in Upper Field 10bit and plays very smoothly in my FCP project.
I then changed the composition to NTSC (Wide Screen), scaled the imported Illustrator file down to about 84% to compensate for the size difference, and rendered out Lower Field 10bit for the NTSC version. It looks terrible. The Roll plays smoothly in FCP, but there are horizontal scan lines running thru each character. I tried bumping the Illustrator file down one pixel before rendering, but that didnt help.
What should I try?
(Also, a minor thing, but AE7 wouldnt display the Illustrator CS2 file correctly, I had to save it as Illustrator 9 first. Is this a bug in AE7?)
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6 Replies
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Change the scrolling speed. The problem is that your pixels are being distributed unevenly across the fields, resulting in broken characters, flicker and any number of other problems.
Mylenium
[Pour Myl
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Hi Mylenium,
Thanks for your reply.
By changing the scrolling speed, do you mean simply changing the duration of the composition?
I’ll experiment, but is +/- one frame usually enough?Matthew
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Matthew,
You will need to change the speed which the texts moves up
the screen. If you have the wrong speed then your text loses
half the resolution or pulsates when moving between the odd
and even scanlines. Unfortunately, the speed that text needs
to move up the screen is usually far faster than desired for
credits in a NTSC project. I can’t remember the equation for
this, but it is in the Motion graphics book Vol2 from Trish
Meyer.Hope this helps a little.
MBW
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Hi Mark,
Sorry for the dumb question, but how to change the speed? Should I make the composition one frame longer or shorter, but keep the Illustrator file the same size?
Matthew
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Matthew,
No such thing as a DUMB question… 🙂 I’ve asked plenty
that could be considered dumb.. 🙂Anyway, somewhere you have a start and end keyframe for the
title move. If you type uu to see all the keyframes you’ll
be able to find them. After you select the position track,
you might have to open the graph window, when you do you’ll
see a graph of the velocity for the object. Most likely your
credits move at a constant rate so the graph will be a horizontal
line.Now you can adjust the endpoint while watching the graph or
you can grab the horizontal line and move it or you can type
in the speed by double clicking on the current speed (blue test).This will not change the length of the composition, but rather
the amount of time it takes for the text to scroll up the
screen.I’m not at my workstation so I’m trying to do this from memory,
and I might have gotten a step or two wrong, but the general
idea above should work. Hope this helps.Mark
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Hi,
Please check this article which should explain things and also give an example script which is very useful for speed control.
https://generalspecialist.com/2006/06/ae-presets-smooth-vertical-scrolls-for.asp
Good luck.
Alex
Lightdrop Video Production, Editing & Design
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