How to get a credit roll without a "shimmer" at DVinfo.net

Go Back   DV Info Net > Apple / Mac Post Production Solutions > Final Cut Suite

Final Cut Suite
Discussing the editing of all formats with FCS, FCP, FCE


Reply
 
Thread Tools Search this Thread
Old March 1st, 2007, 03:41 PM   #1
Inner Circle
 
Join Date: Dec 2005
Location: New York City
Posts: 2,615
How to get a credit roll without a "shimmer"

I am putting a very long title roll together in After Effects from a Photoshop ducuments. The font is small and I get a one pixel "shimmer" at the tops and bottoms of the letters. The strange thing is that the shimmer has a slow frequency, every 10 frames or so.

Any solution?
__________________
William Hohauser - New York City
Edit/Camera/DCP production/Animation
William Hohauser is offline   Reply With Quote
Old March 1st, 2007, 03:55 PM   #2
Major Player
 
Join Date: Nov 2005
Location: Jupiter, FL
Posts: 565
Use the "flicker effect" on it and that should help.
__________________
Mark
www.sharkvp.com
Mark Bournes is offline   Reply With Quote
Old March 1st, 2007, 10:13 PM   #3
Inner Circle
 
Join Date: Dec 2005
Location: New York City
Posts: 2,615
Thanks, will try that.
__________________
William Hohauser - New York City
Edit/Camera/DCP production/Animation
William Hohauser is offline   Reply With Quote
Old March 2nd, 2007, 09:44 AM   #4
Wrangler
 
Join Date: Aug 2005
Location: Toronto, ON, Canada
Posts: 3,637
William,

If it is a 60i sequence there is only one way I know to get around it with small fonts, and still maintain the detail/resolution.
You could create your roll in a 30P sequence and then nest it into your 60i sequence.
__________________
Tim Dashwood
Tim Dashwood is offline   Reply With Quote
Old March 2nd, 2007, 11:00 PM   #5
Inner Circle
 
Join Date: Dec 2005
Location: New York City
Posts: 2,615
Indeed, it's 60i.

I should take the AE project and switch it to 30p NTSC and make a movie?
__________________
William Hohauser - New York City
Edit/Camera/DCP production/Animation
William Hohauser is offline   Reply With Quote
Old March 5th, 2007, 10:03 PM   #6
Wrangler
 
Join Date: Aug 2005
Location: Toronto, ON, Canada
Posts: 3,637
Quote:
Originally Posted by William Hohauser View Post
Indeed, it's 60i.

I should take the AE project and switch it to 30p NTSC and make a movie?
Yes. Turn off field rendering and it should help. Also avoid using fonts so small that portions use only 1 horizontal line. 2 lines should be OK.
__________________
Tim Dashwood
Tim Dashwood is offline   Reply With Quote
Old March 5th, 2007, 11:17 PM   #7
Inner Circle
 
Join Date: Dec 2005
Location: New York City
Posts: 2,615
I try this soon and report. The font is not that small but small enough. Producer's choice.
__________________
William Hohauser - New York City
Edit/Camera/DCP production/Animation
William Hohauser is offline   Reply With Quote
Old March 6th, 2007, 09:21 AM   #8
Major Player
 
Join Date: May 2003
Location: Phoenix, AZ
Posts: 327
William, when working on delivery for 60i, there's really only a few workarounds that can truly eliminate this shimmer, simply because of the nature of interlaced display.

Most likely, the flicker is the file horizontal details of the text bouncing up and down the upper and lower fields as the text rolls. Making a 30p composition doesn't really help, because depending on the speed, the fine detail can still bounce between fields when the comp is evetually displayed interlaced

One option is to use something like a flicker filter, which is really just a blur. I've also used a directional blur, set to vertical only - this maintains all the fine details in the vertical parts of the text, while blurring the horizontal enough to ease the transition between fields.

The best solution, however, is to scroll the text at a rate that always keeps the text on the same field. That means keeping the scroll at a pixels/second number that is divisible by 60. If you set the speed at 30, 60, 120 or 240 pixels/second, you'll find that the text stays rock-steady, no blurring needed.

In After Effects, this usually means adjusting the start and end keyframes in time to get close, then nudging the start or end position pixel by pixel until you get it just so - it has to be exact. Twirl down the position property to see the velocity graph. Sometimes 60.1 pixels/second will work, but I try to get it at a clean 60 (or 120, or 30).

The only downside is that you can tend to lose some resolution in smaller text, as whatever fine horizontal details that sit in one field never display. Usually it's a fair trade, as I said, because the text immediately becomes rock-steady. Sometimes getting it right, then adding in just a little bit of vertical blur or motion blur can make it look more organic.

Last edited by Scott Anderson; March 6th, 2007 at 10:39 AM.
Scott Anderson is offline   Reply With Quote
Old March 6th, 2007, 03:15 PM   #9
Inner Circle
 
Join Date: Dec 2005
Location: New York City
Posts: 2,615
That sound good as well. Unfortunately the scroll is locked into a music track with images coming up at synchronized points. I'll try all three methods suggested here and report back.
__________________
William Hohauser - New York City
Edit/Camera/DCP production/Animation
William Hohauser is offline   Reply With Quote
Old March 12th, 2007, 04:48 PM   #10
Inner Circle
 
Join Date: Dec 2005
Location: New York City
Posts: 2,615
Report #1:

I found that all the credit graphics were moving at around 62 pixels per sec. so I fixed them as close to 60 pixels per sec as AE would allow, 59.98 to 60.01. That got rid of the shimmer, however the credits are a little diffuse now.

Next experiment: 30p
__________________
William Hohauser - New York City
Edit/Camera/DCP production/Animation
William Hohauser is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Apple / Mac Post Production Solutions > Final Cut Suite

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 09:16 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network