UltimateSlice
Project Settings
Click ⚙ Settings in the toolbar to open the Project Settings dialog.
Canvas Size (Resolution)
Choose the output frame size for the project:
| Preset | Resolution | Aspect Ratio | Use Case |
|---|---|---|---|
| 1920 × 1080 (1080p HD) | 1920 × 1080 | 16:9 | Standard HD (default) |
| 3840 × 2160 (4K UHD) | 3840 × 2160 | 16:9 | 4K delivery |
| 1280 × 720 (720p HD) | 1280 × 720 | 16:9 | Web / streaming |
| 720 × 480 (SD NTSC) | 720 × 480 | ~4:3 | Standard definition |
| 1080 × 1920 (9:16 Vertical) | 1080 × 1920 | 9:16 | Mobile / stories / reels |
| 1080 × 1080 (1:1 Square) | 1080 × 1080 | 1:1 | Social media square |
All clips are automatically scaled and letterboxed/pillarboxed to fit the chosen canvas during both preview and export.
Frame Rate
| Preset | Rate | Common Use |
|---|---|---|
| 23.976 fps | 24000/1001 | Film / cinema (NTSC pulldown) |
| 24 fps | 24/1 | True cinema |
| 25 fps | 25/1 | PAL broadcast / European TV |
| 29.97 fps | 30000/1001 | NTSC broadcast / US TV |
| 30 fps | 30/1 | Web video |
| 60 fps | 60/1 | High frame rate / gaming |
Applying Changes
- Click Apply to confirm. Changes take effect immediately.
- The project is marked dirty (unsaved) after applying.
Saving
Project settings (resolution and frame rate) are saved as the <format> element in the FCPXML file.
Use Save… (Ctrl+S) to write the project to a .fcpxml file. Open with Open… (Ctrl+O) on any future session.
Auto-Save
UltimateSlice auto-saves every 60 seconds to /tmp/ultimateslice-autosave.fcpxml when the project has unsaved changes. This is a safety net — use Save… for permanent storage.