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lloydandClaude Opus 5.5
ff8728af08
A 1440x1080 clip with 4:3 pixels showed squeezed: the demuxers read its pixel aspect ratio, but nothing after import used it. New Sequence From Clip made a 1440x1080 sequence with square pixels, the Motion transform sized clips from storage pixels (pillarboxed at 1440 wide in a 1920x1080 sequence), and the monitors drew the frame at its storage aspect. - project: checked_par / sane_par / par_ratio / conformed_size treat file and project ratios as hostile (a zero term, or more than 8:1 either way, is square). MediaClip::pixel_aspect (Interpret Footage wins over the file), Project::source_par (subclips follow the parent, nested sequences have their own, graphics and adjustment layers have none) and Project::conformed_source_size. - render: motion_matrix takes the source's ratio and works in square display units (anchor in source pixels, position in sequence pixels, scale and rotation at the display aspect); Scale to Frame Size fits the display size. CPU, GPU plan, adjustment regions and the mask / graphics overlays share it. - engine: New Sequence From Clip, New Sequence from an item and multicam sequences copy the clip's ratio; default media scaling and Fit / Fill frame use the display size; generators made for a non-square sequence get its pixels; transcodes render pixel for pixel. clip.interpretFootage takes pixelAspect ([num, den] or "file"). - ui: the Source and Program monitors draw the picture at its display aspect; overlays map both axes; Sequence Settings shows the display aspect (16:9 for 1440x1080 at 4:3). Tests: render par_tests (fill, GPU plan parity, Scale to Frame Size, non-square sequences, rotation, Interpret Footage, hostile ratios), engine par_tests (New Sequence From Clip, overwrite into 1920x1080, default scaling, Fit / Fill, Interpret Footage with undo and refused values, hostile file ratios, generators, and ffmpeg-made MP4 and MKV files), project unit tests, and the headless par_ui monitor test. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>