Thumbnail Grid Studio

Thumbnail Grid Studio is a native macOS/Windows app built with SwiftUI/WinUI. You can import multiple videos easily using drag and drop or a file picker. The app allows you to generate thumbnail grids (contact sheets) with a configurable layout. You can customize spacing, colors, metadata visibility, and font sizes to suit your needs. The final output can be exported as JPG or PNG. It also includes bundled ffmpeg and ffprobe, ensuring broad support for various video formats such as MP4, MOV, AVI, MKV, and WEBM.

The Github repository is currently the primary reference for this project.