Nested sequence / precomposition
A timeline inside a timeline: several clips or layers behave as one item but stay editable when you open the group.
See it
What it is
A nested sequence in an editor and a precomposition in After Effects both package several clips or layers as one item in a parent timeline. Open that item and its original contents remain editable. The names are application-specific, and the behaviors are not identical, but both create a timeline inside a timeline.
Use one to move, duplicate, retime, or apply effects to a finished section as a unit. Precomposing is especially useful when several After Effects layers need one shared mask or effect, while Premiere Pro nests often keep multiclip constructions or repeated packages manageable.
Gotcha: grouping changes where properties live and where effects are evaluated. In After Effects, choosing whether to leave attributes in the current composition or move them into the new one can change the result. Frame size, frame rate, transparency, and collapsed transformations can also behave differently across the parent boundary, so inspect the composite after nesting.
Ask AI for it
In Adobe After Effects, select the title, shape, and texture layers and use Layer > Pre-compose (Ctrl or Cmd + Shift + C) with Move all attributes into the new composition. Name it `Title_Package`, tick Adjust composition duration to the time span of the selected layers, and apply the shared mask and Transform animation to the precomp layer in the parent composition. Preserve alpha, frame rate, and layer timing, and enable Collapse Transformations only after checking that blend modes and 3D transforms still render correctly.