How to adjust this problem.

[lightnecker]

I made this bricks picture rotated in photoshop, and I imported this to Aftereffects. However aftereffects can't recognize the outline of this picture, and this picture has margin. This margins are problem.

I want to use "motion tile" effect, but this margin disturb.

How to adjust the outline?

[Mike_Abbott]

In Photoshop cut out your brick wall so it has a transparency around the edges. Save it as a PNG file with transparency.

This file will then have an alpha channel that After Effects will recognise, and you will be able to motion tile it with a transparent background.

[lightnecker]

---[and you will be able to motion tile it with a transparent background.]

You mean this? I want to duplicate continuously. I don't need transparency.

I want to know fit outline, or how to ignore alpha channel.

Thank you.

[Towerguy]

Hi. Don't rotate it and have the bricks fill the image (you will have to trim it so that it tiles properly when joined up with the others). Then use motion tile and then rotate the already tiled image.

[lightnecker]

I'm sorry for my poor information. In actuality, my working in AE is not about a brick photo. I'm editing about people and landscape photos, and other processing is done in Photoshop. So I want to take over this rotating information.

A picture must have margin is specification? We don't have the way to fix this problem?

Thank you very much.

[Mike_Abbott]

No problem. I understand it's difficult due to the language.

Could you upload an image / picture made in Photoshop,  to help us understand the issue better?

[lightnecker]

This is a part of my creativity. [1st→2nd] these picture's have transition effects like changing only the background.

However, 2nd picture has blank in the four corners. This scene is very short, so it is no problem to duplicate with motion tile mirroring.

In conclusion, I want to know fill these four corners blanks, so I asked the question like first one.

Thank you.

[Towerguy]

Hi. The problem with trying to use Motion Tile is that it works with the whole image dimensions, including the empty bits around the image. But you could duplicate the background image several times and manually move the copies so they join at the edges.

You can make them a mirror image (Transform/Scale, click on the chain symbol to unlock the scale proportions, and use an equal but minus number on x or y or both eg: -100,100 or 100,-100, or -100,-100). However I would think that you might get less obvious joins by masking and slightly feathering your main image's borders and just moving the duplicates underneath it until it looks okay -with or without mirroring.

Or as suggested scaling them up - he posted at the same time as me!

[Rick Gerard]

Motion tile works on layer (image) size and it does not take into account any transparency. When preparing these kinds of images for video it is always a good idea to make them larger than they need to be so you can do the positioning in After Effects. They have to be large enough to cover the entire frame.

[Mike_Abbott]

Just extend your image in Photoshop on all sides before you bring it into After Effects.
Motion tile isn't the right approach for this.