Animated grid with images, unwanted jitter

[joel arvidsson]

I not sure what im doing wrong cause Its really rare I get jitter. I have made an tall image that have pictures in a grid. I have then linked this image (with image grid on) to a null that I have animated. The only movement is a vertical where I start of the image revealing the lowest pictures in the grid. Then I go upp to the upper row of images of the grid. I addad a little ease out, ease in  to it.

I tried to crank up the motion blur but that does not help. Sure I could go 50p instead of 25 but the rest of the project is in 25p. The problem is that the image jitters and it feels like the images I pulsing a little.

I think this I this is mabe due to subpixle movements. Perhaps I should use a script like for end crawls. But then I don't now how to keep the easy out easy in.

I tried to oversample the images 200% when I exported the sequence from after effect but with no extra gains.

[angie_taylor]

Use the speed graph and info panel to make sure that the speed is an even multiple of your frame rate. This will avoid the jittering 🙂

[joel arvidsson]

Thanks for your suggestion Angie. Im not sure how to apply it thoe. Did you mean the info panel at the right corner (on standard workspace). There I only get the info on Rgba values and my fps of the playback. I se the upside down u shaped animation curve in the speed graph. It goes up to right under 500 px/sec and than down again to zero.

[joel arvidsson]

It did help some with the smooth credit scrolling on the paste bin. But there is still a little flicker left. Aslo now the animation is constant and I cant start stop the motion where I want.  So there got to be a better solution.

Smooth Credit Scrolling - Pastebin.com

[angie_taylor]

Don’t use the credit scrolling preset, animate it manually in the graph editor speed graph till the speed is an even multiple of the frame rate. Then add your eases. 😉

[joel arvidsson]

Ok, I should kill the easy out and in and get the speed correct first. Atleast the speed graphs is not curved anymore. So should I change the speed from 300,345 to 300 and that 300times 25= 7500. So its cool unless you have decimals?

[angie_taylor · Accepted solution]

Hi there,

yes, take off the eases and you should see a straight line - denoting an even speed. Select both the key frames and you should see a bounding box around them. Drag this till the speed is an even increment of your frame rate. If you have trouble getting it exact you can double-click the keyframes or right-click to enter the keyframe velocity box where you can manually enter an outgoing and incoming speed for each kf. Once you have done this, add another of about 1 second before and after the first and las keyframes. Use the pen tool to do this. This will make sure that the value remains constant between these when you alease the first and last kfs. Then finally, ease the first and/or last keyframes. You may also consider the overall speed. It may just be too fast for the frame rate?

[angie_taylor]

you can also add a bit of motion blur to help. BTW the info panel will display the speed when you select the keyframes in the graph editor 🙂

[joel arvidsson]

I put down the speed of scrolling from 300 down to 100 and now its much less stroking, flicker, jerky motion. I rarely have problem with flicker. My screen in fixed at 60hz while in it would have been optimal with 50Hz instead. Perhaps it make things a little worse.

It is not perfekt yet, but I can atleast deliver it as is and dig deeper after that.

Thanks for taking some time on this Angie. Much appreciated

[angie_taylor]

A pleasure! 🙂 can you please mark the correct answer so others can find it easily? Thanks 🙂