Video size change

This tool resizes video frames by changing width and height or by applying a scale factor, with optional aspect-ratio preservation. It targets editors, content creators, and automation pipelines that need platform-ready resolutions or smaller file sizes.
Examples include exporting a 4K master to 1080p for YouTube or converting a vertical clip to 9:16 for social stories. Conceptually, the tool reads the source dimensions, computes a scale factor based on the requested target size, and applies a re-encode with a chosen codec. If fit-with-padding is selected, it preserves the scaled image and adds padding to reach the target frame; if crop is chosen, it removes edges to fill the target. Advanced options allow bitrate hints and container choices.
Core features include exact dimension resizing, scale-based resizing, aspect-ratio handling, padding or cropping modes, and output metadata reporting (new resolution, file size estimate). Use cases range from social media uploads to ad reels and marketing clips. The tool provides deterministic outputs, avoids manual frame-by-frame editing, and reduces re-encoding steps. It can run in batch mode through an API or queue, enabling automation.
Limitations include support for common codecs and containers; audio remains unchanged unless explicitly re-encoded, and very large or unsupported formats may require conversion beforehand. The tool assumes input is a valid video file and does not perform streaming adaptation or color-space transforms; excludes non-video assets.