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Inspiring
July 30, 2022
Answered

Premiere Pro, Roll credits flickering/jerky

  • July 30, 2022
  • 3 replies
  • 15159 views

Hello, I am currently working on a movie for two years and finished working on the end credits. 

I realised the essential graphics roll credits is making my text laggy and jerky. How do I stop this issue?

I am using 23.976.

How do I reduce the lag? I've tried reduce-interlace-flicker and added 1.2, and make the text alittle grey to all the text. It is still showing the same issue.

This topic has been closed for replies.
Correct answer R Neil Haugen

Meant to say the problem is the jerkyness of the scrolling.


First, if your monitor isn't refreshing at either the same frequency as your sequence or double it, that can cause this. Which is why it's good to have a monitor that comes with refresh rate settings to match video work.

 

Second, IF the monitor is showing them correctly without visual jerkiness, you need to have whole-number vertical movement per frame.

 

Set your timeline timecode to Frames. Then count the length of time in frames that you want to have for your crawl.

 

Now you need to do a bit of math. Your vertical motion needs to be a multiple of the 'horizontal' motion ... the frame count. In even "whole" numbers.

 

So you have a vertical scroll ready ... and it's say 9,000 pixels total 'height'. You want a typical 3 pixels per frame movement ... so you need to set the length of that scroll on the timeline to 3,000 frames.

 

But if you want a slightly slower 2 pixels per frame vertical movement, then ... you need to adjust the 'length' or frame-count of the crawl to 4,500 pixels. Because you need an exact number of pixels in whole numbers.

 

If you can't divide your pixel height of your crawl by the speed in frames of movement, then you need to make small adjustments to your crawl to get that so that you have a whole number pixel count.

 

Neil

3 replies

R Neil Haugen
Legend
July 30, 2022

A "crawl", vertical movement for text in the end credits, is very difficult. First, you have to have the perfect timing of motion. Which is to say, no "partial" frame motion. For every frame to frame time, there must be an exact 1, 2, or at most 3 pixels of vertical motion.

 

If you divide the number of frames of the crawl by the vetical frames motion and get anything other than 1, 2, or 3 ... say you get 1.2 ... that's a problem. You need to adjust the length of time until you get exactly a full integer number, no decimal points.

 

Neil

Everyone's mileage always varies ...
Participant
August 27, 2022

I read this full post and replies. I don't understand. I am trying to make end credits scrool vertically. That part works but the scrolling (which occurs over/on top of 3 different video clips (see image, attached). I am using Premier Pro ver. 22.5.0. I am not an expert by any means. Can you tell me where or how do I determine what your saying in Premier Pro's UI?

 

Thanks,

Gary

R Neil Haugen
R Neil HaugenCorrect answer
Legend
August 27, 2022

Meant to say the problem is the jerkyness of the scrolling.


First, if your monitor isn't refreshing at either the same frequency as your sequence or double it, that can cause this. Which is why it's good to have a monitor that comes with refresh rate settings to match video work.

 

Second, IF the monitor is showing them correctly without visual jerkiness, you need to have whole-number vertical movement per frame.

 

Set your timeline timecode to Frames. Then count the length of time in frames that you want to have for your crawl.

 

Now you need to do a bit of math. Your vertical motion needs to be a multiple of the 'horizontal' motion ... the frame count. In even "whole" numbers.

 

So you have a vertical scroll ready ... and it's say 9,000 pixels total 'height'. You want a typical 3 pixels per frame movement ... so you need to set the length of that scroll on the timeline to 3,000 frames.

 

But if you want a slightly slower 2 pixels per frame vertical movement, then ... you need to adjust the 'length' or frame-count of the crawl to 4,500 pixels. Because you need an exact number of pixels in whole numbers.

 

If you can't divide your pixel height of your crawl by the speed in frames of movement, then you need to make small adjustments to your crawl to get that so that you have a whole number pixel count.

 

Neil

Everyone's mileage always varies ...
Peru Bob
Community Expert
Community Expert
July 30, 2022
Inspiring
July 30, 2022

I am on 15.4.1 

GTX 1050 TI

I5 8500