When you edit a project, Adobe Premiere Elements uses disk space to store scratch files required by your project, such as captured video and audio, conformed audio, and preview files. Adobe Premiere Elements uses conformed audio files and preview files to optimize performance, allowing real‑time editing, high processing quality, and efficient output. All scratch disk files are preserved across work sessions. If you delete conformed audio files, Adobe Premiere Elements automatically recreates them. If you delete preview files, they will not be recreated automatically.

By default, scratch files are stored where you save the project. The scratch disk space required increases as your movie becomes longer or more complex. If your system has access to multiple disks, you can use the Edit > Preferences > Scratch Disks command to specify which disks Adobe Premiere Elements uses for these files. For best results, set up your scratch disks at the very beginning of a project, before capturing or editing.