kutu_media_transform 0.2.0

Device-side crop, trim and re-encode for photos and videos, plus timestamped frame extraction, on Android Media3 and iOS AVFoundation.

0.2.0

First public release; 0.1.0 was the still-image-only cut and was never published.

• MediaTransform seam with four operations: exportImage, exportVideo, extractFrames and probeVideo.
• CropRect, the single canonical geometry type — normalized 0..1, origin top-left, y-down. Media3's NDC and AVFoundation's point space are converted only at the platform edge.
• Android export on androidx.media3.transformer.Transformer, using androidx.media3.effect.Crop for the rectangle, ClippingConfiguration for the trim and Presentation for the resolution cap.
• iOS export on AVMutableVideoComposition plus AVAssetExportSession, with the layer instruction composed against the track's preferredTransform.
• Still-image export decoded at target size — ImageDecoder.setTargetSize on Android, kCGImageSourceThumbnailMaxPixelSize on iOS — so a full-resolution bitmap is never allocated. EXIF orientation is baked exactly once.
• HDR sources tone-map to SDR by default; HdrMode.keepHdr opts out.
• Batched frame extraction for filmstrips and cover frames, with timestamps — something platform gallery thumbnails cannot express.
• Per-export progress reporting and cooperative cancellation through TransformCancelToken.
• package:kutu_media_transform/testing.dart exports FakeMediaTransform so consumers can unit-test without a device.

0.1.0

• Still-image export and the MediaTransform seam; superseded by 0.2.0 before publication.