Scope screens and projectors
No black bars. No cropped picture.
Fill a 2.39:1 scope screen without throwing away the edges. Unplugged shares the stretch across both axes, so the correction is spread out and faces near the edge keep their shape.
Every option has a trade-off
Stretching evenly breaks shapes. Warping only the horizontal axis bends faces near the edges. Cropping throws picture away. Non-linear stretch trades a measured amount of the first two for the bars, and lets you decide how much.
Why both axes?
A 2.39:1 film shown on a 16:9 panel needs roughly 24% more picture height to lose the bars. Horizontal-only NLS spends all of that in the width, which is why faces near the edges bend. Unplugged can split the same correction between the axes.
At a 50/50 split, that 24% becomes about 12% up-and-down and 12% sideways. The bars are gone and each axis carries half the distortion. The exact ratio is yours to set.
The controls, in plain terms
| Bars removed | 0–100% · how much of the letterbox the picture grows into. It controls every fill mode; 0 is the film at its own aspect, 100 fills the screen. Half the bars costs half the distortion. |
|---|---|
| Axis | Horizontal (default) · Vertical · Split. Split uses the percentage below to share the correction. Vertical and split can elongate vertical detail. |
| Split | The share each axis takes. 50% is an even split. |
| Max distortion | 100–150% · caps the warp per axis in both directions. Whatever the warp refuses is covered by cropping the axis that has slack. |
| Fill mode | Auto · Stretch · Crop · Off. Auto fills up to the fill limit; Stretch never crops; Crop spends the bars; Off returns the film to its own aspect. |
| Fill limit | The largest correction Auto will fill with. |
| Lock band | Keeps one shape for titles that switch aspect mid-film, such as IMAX sequences. |
| Centre protection | Up to 90% · keeps a uniform, undistorted band around the middle and pushes the correction into the rim. |
| Post NLS X / Y crop | Per-axis crop after stretching. It covers the whole frame, including bars, and applies in real time. |
Try it live
Every control applies as you move it, including on a paused frame, so you can judge the correction on a face rather than on motion. N toggles the stretch on and off for an A/B.
The Info panel's Warp / Crop row reports what the current settings are actually costing, so “why does it look like that?” has a number next to it.
One honest limit
Both axes are being resampled, so with strong stretch fine text can look slightly soft. Lower the strength or raise centre protection if it bothers you. This is the honest cost of filling the screen without cropping, not a defect that a later setting hides.
During a scope-to-IMAX transition, at least one IMAX frame can still use aspect-ratio NLS. The per-frame band tracking removes the stale-crop drop-outs; this single-frame case is the remaining limit.
Measure the correction, then make it.
Free · GPL-3.0 · Windows 10/11 x64