Crate ffcine_reframe 

Reframe (roadmap step 5, docs/design.md#roadmap, docs/reframe.md): keyframed crop windows for punch-ins, eased push-ins, pans and vertical aspect windows (9:16 reels, 4:5 feed) from 16:9 sources, evaluated in Rust per frame and applied as the crop/scale of the libplacebo grade pass. Replaces the prototype’s per-frame libplacebo crop expressions (render.py gpu_geo), without their pixel rounding: windows are f64 until libplacebo resamples them sub-pixel.

• Reframe: the ffcine.geo.reframe/1 effect (prototype fields, keyframes, per-profile overrides), evaluated into a Frame per output frame.
• Profile: the output frame (one timeline renders once per profile), with a SafeArea overlay for review.
• pass::apply: puts the frames into a ffcine_render::Grade, composed with the stabilizer’s warp (ffcine_core::geom::Mat3) when there is one.

Re-exports

pub use keyframe::Interp;

pub use keyframe::Key;

pub use keyframe::Keyed;

pub use profile::Profile;

pub use profile::SafeArea;

pub use reframe::Fit;

pub use reframe::Frame;

pub use reframe::Punch;

pub use reframe::Reframe;

pub use reframe::Shot;

pub use reframe::Slide;

pub use window::Rect;

Modules

keyframe

The one keyframe form, [{"t": RationalTime, "v": value, "interp": "linear" | "ease" | "hold"}] (docs/timeline.md#effect-schemas), evaluated in Rust per frame.

pass

Reframe in the grade pass: the per-frame windows become Grade::crops (libplacebo’s own sub-pixel crop and EWA scaler), or, with a stabilizer warp, one MAIN hook that samples the source at warp_i * crop_i so warp and crop are a single resample in the same pl_render_image call.

profile

Render profiles: the output frame a timeline is reframed into. One timeline renders to several aspects (16:9 master, 9:16 reels, 4:5 feed) by rendering it once per profile; the reframe effect can carry per-profile overrides (profiles: {name: {...}}, crate::Reframe).

reframe

ffcine.geo.reframe/1: the prototype’s zoom / punch / push / pan / fit fields (edit.yaml, render.py gpu_geo), any of zoom, zoom_center, crop_x, crop_y also in the keyframe form, plus per-profile overrides. Evaluated per output frame into a crop window.

window

Crop windows in source pixels, kept as f64 end to end: nothing is rounded, so a moving window moves by fractions of a pixel and its size never steps out of sync with its position.