Wobbly

Wobbly is a video editing assistant for people working with anime and animated content. It helps you fix a common problem in video processing: when interlaced footage (old video formats that split each frame into two parts) gets converted to progressive format (modern, full frames), the conversion sometimes makes mistakes about which parts belong together. Wobbly lets you catch and correct those mistakes.

The tool comes in two pieces. Wibbly is the analysis engine—you feed it a video file, and it watches the footage carefully, measuring patterns and creating a project file with its observations. Wobbly is the editor where you actually make decisions. You open a project file (or a raw video) in Wobbly and review what Wibbly found. For each scene in your video, you can tweak the conversion settings, or tell Wobbly "no, the automatic tool got this wrong—use this setting instead."

This is useful if you're archiving old anime episodes, restoring video for a remaster, or just trying to get the cleanest possible output from older source material. The automatic tools (VFM and VDecimate, which are built into VapourSynth, a video processing framework) do a decent job, but they're not perfect. Wobbly gives you a way to override them scene-by-scene without having to reprocess the entire video or hand-code everything from scratch.

The project is written in C++ and uses Qt for the user interface, so it's a proper desktop application. It integrates with VapourSynth, which is the backbone for the actual video processing. If you're already using VapourSynth for video work, this plugs right in as a companion tool to make the tedious parts faster and more reliable.