The Timeline is one of the interface panels where you can place and visualize different elements chronologically. Each element is represented by a line called a "layer", which together form a layer stack.

Made up of two separate parts

This panel is split in two main parts:

• The layer stack, on the left
• The Dope sheet, on the right (visible by default, but we'll see that other modules are available)

You can adust the space these two sections take up by clicking on the separator and dragging it left and right.

Timeline controllers

Here is a breakdown of the Timeline controllers for the first line:

• A + button to add a new layer to the stack. It can be a Generator, a Null Layer, an Adjustment Layer or a 3D Object. The new layer will be added above the current selection. The contents of this menu are also available in the Quick Access menu.
• A slot that can bring up the list of all existing compositions in the Project panel; you can assign one of them to the current Timeline, disconnect the current one, create a new one or display the current compositon's properties.
• A button for moving up one level in the parent composition, when the timeline is connected to a Sub-Composition (Page Up or Ctrl + Alt + Up).
• A button for jumping down to one of the Sub-Compositions used in the current Stack via a drop-down menu, or directly if only one Sub-Compositon exists. (Page Down or Ctrl + Alt + Down).
• A similar slot to that for compositions, but dedicated to Audio-Mixes.
• A switch to choose the display method of the timing information in the dope sheet (Frame number or Timecode)

Just below:

• A time controller, including a timecode and a frame counter to display or enter the playhead position in the dope sheet

Mutiple Timelines and Viewers

You can display multiple Timelines at the same time by simply adding new panels to your workspace, using the Panels > Timeline > New timeline menu, in the top bar.

Move this new panel to the desired location and select the composition you want to look over from the list.

You can even display two or more Timelines that refer to the same composition. This way, you'll be able to look over different parts of the stack or different timing in the dope sheet.

|||IMAGE DES DEUX TIMELINES TOP / BOTTOM

Assigning Timelines to Viewers:

When two Viewers and two Timelines are on the screen, the question is: which timeline controls which viewer?

At the bottom of each Viewer, a Timeline selector is displayed:

The contents of this selector are filled with a list of all visible timelines on screen. This lets you choose which timeline's current time will define the image to be rendered in a specific Viewer.

Populating the Stack:

In the Stack, on the left, you can superimpose elements according to the principle of layer stacking.

To add new layers to the Stack, you can:

• Drag a Source from the Project Panel to the Stack.
• Click the + button at the top of the Timeline.
• Copying / Pasting existing layers (can also be made between two Autograph projects opened at the same time).

Selecting and Reordering layers:

Selecting layers is similar to the process of selecting files in your file browser, with some minor differences:

• Single clicking selects only one layer
• Pressing the Ctrl/Cmd key allows you to add layers to the current selection, one by one
• Pressing the Shift key selects a group of layers between clicks

Selection Order:

When you press Ctrl/Cmd and click on layers, the selection order is retained. When you want to Copy/Paste or Duplicate a group of layers, this clicking order will define the stacking order of the new layers.

The same is true when using the Shift key:

• Selecting from the bottom to top will retain the current order
• Selecting from top to bottom will invert the order of the new layers, compared to the original ones.

All layers in the current stack can be:

• Selected by pressing Ctrl/Cmd + A
• Deselected by pressing Ctrl/Cmd + Shift + A.

Reordering layers:

• To move selected layer(s) up or down in the Stack, click and drag them to reorder the Stack

• To move up or down by one layer, Right Click > Actions:
  • Move Layer(s) Up (Ctrl + Shift + Up)
  • Move Layer(s) Down (Ctrl + Shift + Down)

|||IMAGE DU MENU

Navigating the Timeline

Since Autograph is available on Windows, Mac, and Linux, it is important to accommodate all types of systems that do not have identical keyboard shortcut policies. Depending on the mouse or tablet used, some combinations are sometimes easier to use on certain systems.

This is why several shortcuts are available for the same action:

Scrolling through the stack:

• Use the Mouse wheel
• Press the Middle Button

You can also use the scroll bar on the right.

Moving in the Dope sheet:

• Panning:

  • Space + Left Button
  • Middle Button
  • Alt/Option + Left Button

• Zoom:

  • Alt/Option + Mouse wheel
  • Ctrl/Cmd + Alt/Option + Left Button
  • F key to fit the current selection or the composition duration if nothing is selected

|||IMAGE DU SCROLL ET DU FIT

Modules and tools

The Dope sheet is by default the right part of the Timeline. This module lets you manage the temporality of the elements that make up a composition.

• Each layer is represented by a block that you can move by simply clicking and dragging.
• The Dope sheet is also where you can select and move keyframes when parameters are animated.

But the right part of the Timeline may vary depending on the module used and the side panels.

Buttons at the top right of the header allow you to switch from one module to another or display additional panels named Dock:

From left to right:

• The Multi Edit Mode selector

• The Keyframe Properties Dock
• The Parenting Dock

• Dope sheet module
• Curve editor module

• Fit the current selection or the composition duration if nothing is selected (F key)
• Timeline Settings

The Multi Edit Mode selector is one of the tools attached to the Dope sheet . Switching to the [Curve editor] module(../curve_editor/overview.md) will display other tools on the left.

Filtering the Stack

The Stack contains many items, and unfolding hundreds of parameters can make navigation difficult. Autograph offers a filter system to easily access the most used parameters or reduce the number of layers displayed in the Stack.

Filtering layers by name:

At the bottom of the Stack, there is a field to define a string. If this string can be found in the name of a layer - whether it is at the beginning, in the middle, or at the end - this layer will always be visible. All layers that do not contain this string will be visually removed from the Stack, although Autograph will still use them for calculating images, visible in the Viewer.

The string in the layer names will be highlighted in green:

Whenever a filter is active, whether it is the name search or the other filters described below, a red cross appears at the bottom right of the stack.

Click on it or press Alt/Option + F to remove any filter applied to the stack.

FILTERS SHORCUTS

After selecting a few layers in the Stack, you can apply filters to display only certain parameters for this selection. If nothing is selected, all layers will be affected. These filters can be cumulative or not.

To add a filter to the existing ones, just press the Shift key in the menu or by using a shortcut. Without this key, adding a new filter will remove the previous ones.

Filtering layers containing keyframes:

By clicking on the diamond at the bottom right of the Stack, only the parameters containing keyframes will be displayed. The shortcut for this action is U.

Filtering layers by parameter type:

Next to the keyframe filter button, a drop-down menu gives you access to the transformation parameter filters as well as additional options.

• Transform: displays and unfolds all Transform params. Shortcut is T
• Position: shortcut is P
• Rotation: shortcut is R
• Scale: shortcut is S
• Anchor Point: shortcut is A
• Skew: shortcut is D, as in "deform"
• Opacity: shortcut is O
• Amount: shortcut is W, as in "weight",
• Visible: shortcut is V
• Blending Mode: shortcut is B

Folding/unfolding layers and parameters

By pressing the shortcut E, you can fold or unfold the selected layers.

During this process, if you have previously unfolded specific parameters, such as a layer Source, Autograph will remember which parameters were unfolded. This way, you can fold a layer just to make more room in the Stack, then unfold it and return to the same viewing configuration.