oximedia-scaling

Professional video scaling operations for OxiMedia. Provides high-quality video scaling with bilinear, bicubic, and Lanczos filtering, aspect ratio preservation, super-resolution, thumbnail generation, and more.

Part of the oximedia workspace — a comprehensive pure-Rust media processing framework.

Version: 0.1.8 | Tests: 900 — 2026-05-29

Features

• Bilinear interpolation - Fast scaling with good quality
• Bicubic interpolation - Higher quality scaling
• Lanczos filtering - Highest quality downscaling with minimal ringing
• Aspect ratio preservation - Letterbox, crop, and stretch modes
• Super-resolution - AI-assisted upscaling
• Adaptive scaling - Content-aware scaling algorithms
• Chroma scaling - Proper chroma plane scaling for YUV formats
• Thumbnail generation - Efficient thumbnail creation
• Crop and pad - Crop/pad with scaling pipeline
• Resolution ladder - Multi-resolution output generation
• ROI scaling - Region-of-interest scaling
• Field scaling - Interlaced content support
• Deinterlacing - Convert interlaced to progressive
• Scale pipeline - Composable scaling filter chains
• Sharpness scaling - Sharpness-preserving scaling
• Quality metrics - PSNR/SSIM quality measurement for scale operations
• Tile scaling - Tile-based scaling for large images

Usage

Add to your Cargo.toml:

[dependencies]
oximedia-scaling = "0.1.8"

use oximedia_scaling::{VideoScaler, ScalingParams, ScalingMode, AspectRatioMode};

// Create a scaler for 1080p output
let params = ScalingParams::new(1920, 1080)
    .with_mode(ScalingMode::Lanczos)
    .with_aspect_ratio(AspectRatioMode::Letterbox);

let scaler = VideoScaler::new(params);

// Calculate output dimensions preserving aspect ratio
let (out_w, out_h) = scaler.calculate_dimensions(3840, 2160);

API Overview

• VideoScaler — Main scaler with dimension calculation
• ScalingParams — Target dimensions, mode, and aspect ratio configuration
• ScalingMode — Bilinear, Bicubic, Lanczos
• AspectRatioMode — Stretch, Letterbox, Crop
• Modules: adaptive_scaling, aspect_preserve, aspect_ratio, bicubic, chroma_scale, crop, crop_scale, deinterlace, field_scale, lanczos, pad, pad_scale, quality_metric, quality_metrics, resampler, resolution_ladder, roi_scale, scale_config, scale_filter, scale_pipeline, sharpness_scale, super_resolution, thumbnail, tile

License

Apache-2.0 — Copyright 2024-2026 COOLJAPAN OU (Team Kitasan)