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Importing a sequence of still images

From: After Effects Apprentice 04: Layer Control

Video: Importing a sequence of still images

Not all source footage comes in the form of a movie where all of the individual frames, which are supposed to be played one after another, are bundled together in one file. Sometimes you'll get what's known as a still image sequence, a series of individual still images or frames which you need to assemble one after another into a continuous movie. Well, After Effects can do that for you automatically. But before you do that, you need to set up a preference. I am going to go to Preferences in After Effects, and go to Import, and there's an item here for Sequence Footage.

Importing a sequence of still images

Not all source footage comes in the form of a movie where all of the individual frames, which are supposed to be played one after another, are bundled together in one file. Sometimes you'll get what's known as a still image sequence, a series of individual still images or frames which you need to assemble one after another into a continuous movie. Well, After Effects can do that for you automatically. But before you do that, you need to set up a preference. I am going to go to Preferences in After Effects, and go to Import, and there's an item here for Sequence Footage.

What frame rate to assign by default to any sequences of still images that you import. It defaults to 30, which is rare to use for anything. If I was in a PAL video country, I would make it a 25. Since I am in an NTSC country, I'll enter 29.97. Don't fret this too much. You can change this after the fact for each sequence whenever you like. So it's nice to setup a default ahead of time that makes sense for the project you're working on. I'll click OK. Next I'll select what folder I want them to go into.

In this case I want them to go into My Sources, and I'll do Command+I or Ctrl+I to import. Navigate to a folder of still images that you want to import as a sequence. It's best if they're consecutively numbered. Otherwise, After Effects won't know what to do with the gaps in between the numbers. If you have Exercise Files that came with this lesson, we've provided a sequence of images inside Exercise Files, Sources, Muybridge Sequence. As soon as I select any one of these files, an additional option will become available in After Effects: whether or not to treat it as a sequence.

Keep an eye out for this checkbox, because sometimes you might might need to only import a single image. But if they're consecutively numbered, After Effects will say, "Maybe there's supposed to be a sequence. Maybe I should treat them as footage." If you don't want that, turn this off. But if you do want that, turn it on. I'll select one of my files, click Open, and it'll be imported into the folder I selected. You'll notice that even though there were 10 files, it creates 1 file in After Effects, followed by the image numbers included in that sequence. When I look at the top my Project panel, I can see file size, the duration, 10 frames, since there were 10 images, and my default frame rate.

Now 10 frames is kind of short for any movie. So if I want to repeat that, it's very simple. I'll open up the Interpret Footage dialog we discussed in the last movie. And I'll set the loop to something very large, such as 100 times. Now you see my duration has changed to 33 seconds and 10 frames, which is good and long. If I want to create a comp, I'll just drag that sequence onto the New Comp icon and now I've got my sequence. And as I step through these one at a time using Page Down, each of the individual still images that were on my drive have been put together for me automatically one after another into the sequence.

Since I've set it to loop, once it's gone past the 10th file, it started repeating the sequence over again. Pretty cool! Let's set up a small RAM preview, maybe about 3 seconds worth. Press N to end my work area, zero to RAM preview. This is a really brisk walk sequence. This is because we're using one file every frame at 29.97 frames a second. Pretty brisk pace.

If you want to slow this down, go back to your source file and click on the Interpret Footage button at the bottom of the Project panel. And let's slow down the frame rate to maybe something like only 10 frames a second. Click OK. Show the RAM preview. And this is a more sedate workable pace. You can go ahead and make this whatever frame rate you want. Since you've set that frame rate in the Interpret Footage dialog, every time you use this piece of footage in a project, it will use this frame rate, this number of times to be looped.

If you want to use the same sequence multiple times inside this comp, but at different rates, here's a couple different tricks and I'll discuss that in the next movie.

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This video is part of

Image for After Effects Apprentice 04: Layer Control
After Effects Apprentice 04: Layer Control

38 video lessons · 11911 viewers

Chris Meyer and Trish Meyer
Author

 
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  1. 3m 20s
    1. Overview
      1m 20s
    2. Using the exercise files
      2m 0s
  2. 23m 19s
    1. Stacking and sliding layers
      5m 23s
    2. Trimming layers in the Timeline panel
      5m 45s
    3. Trimming in the Layer panel
      3m 31s
    4. Pre-trimming and inserting layers from the Footage panel
      3m 20s
    5. Slip editing
      5m 20s
  3. 12m 13s
    1. Applying sequence layers to footage
      4m 45s
    2. Using sequence layers with objects
      2m 14s
    3. Example: Sequence layers and photographs
      2m 20s
    4. Creating a new composition using sequence layers
      1m 35s
    5. Understanding the importance of layer order
      1m 19s
  4. 17m 20s
    1. Looping footage
      3m 15s
    2. Importing a sequence of still images
      4m 30s
    3. Using Time Stretch vs. altering frame rates
      3m 23s
    4. Frame blending
      6m 12s
  5. 19m 1s
    1. Overview of blending modes
      7m 5s
    2. Combining modes and effects
      4m 45s
    3. Why apply effects to solids?
      7m 11s
  6. 22m 2s
    1. Using the Effects & Presets panel
      5m 3s
    2. Applying presets
      5m 34s
    3. Working with behaviors
      3m 2s
    4. Creating and saving presets
      8m 23s
  7. 7m 55s
    1. Importing Photoshop files with layer styles
      4m 7s
    2. Applying layer styles inside After Effects
      3m 48s
  8. 9m 27s
    1. Using adjustment layers
      3m 17s
    2. Working with adjustment layers and alpha channels
      3m 14s
    3. Applying a filmic glow treatment
      2m 56s
  9. 6m 50s
    1. Quizzler challenges
      1m 16s
    2. Quizzler solution one: Pyrotechnic composite
      3m 7s
    3. Quizzler solution two: Sequenced fades
      2m 27s
  10. 11m 51s
    1. Idea corner one: Adjustment layer shapes
      1m 55s
    2. Idea corner two: Creating a traveling glass bar
      4m 12s
    3. Idea corner three: Creating sequences from filmstrips
      5m 44s
  11. 27m 23s
    1. Looping footage by crossfading
      5m 20s
    2. Working with effect point paths
      5m 12s
    3. Brainstorming
      7m 19s
    4. Working with pixel aspect ratios
      9m 32s

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