Video Ratio Converter

The tool computes new video frame dimensions when the desired delivery ratio differs from the source. It accepts input width and height in pixels and a target ratio a:b (for example 16:9 or 4:3). It supports two workflows: fit, which scales the image to fit within the original frame and may add letterboxing, and fill, which scales to completely cover the frame and may crop edges. Conceptually, it uses s = min(W/a, H/b) for fit and s = max(W/a, H/b) for fill, then outputs W' = floor(s*a) and H' = floor(s*b). This enables predictable framing decisions for editors and producers. The tool highlights when bars are required or when cropping occurs, and can report the percentage change in dimensions. Use cases include preparing assets for YouTube (16:9), Instagram Feed (1:1 or 4:5), or broadcast deliverables, and for rapid comparison between crop vs letterbox approaches. Unique value lies in a precise, formula-based approach with explicit edge-case handling and clear output of bar or crop dimensions. Core features include integer rounding options, preset ratios, and a simple, auditable calculation trail for QA. Use cases span quick revisions, batch comparisons, and preflight checks before encoding or rendering.