Here is how to create a new composition and import files in Adobe After Effects:
- Click on the New Composition button in the right column of the Welcome screen, or use the keyboard shortcut Ctrl + N on Win or CMD + N on Mac. In the Composition Settings window that appears, select UHD 8K 23.976 under the Preset drop-down menu and set the Duration to the desired length for your composition.
- Save your composition by clicking on File > Save (CTRL + S on Win or CMD + S on Mac). Type in a name for your composition in the Save As window and choose a location to save the file.
- To import files, go to File>Import>File… or double-click on the Project tab. Select the desired files and click Open. You can also import files by dragging them directly into the Project tab or by using CTRL + I on Win or CMD + I on Mac.