Show HN: Apollodorus Video – batch video editor in the browser that runs locally

Apollodorus Video, a browser-based tool that lets users apply batch edits — conversion, resizing, and other operations — to multiple video files at once, launched on August 12, 2026, per a Show HN post by its creator. All processing runs locally in the browser, meaning no files are uploaded to a server.

The tool is built on FFmpeg-wasm, the WebAssembly port of FFmpeg, and is accessible at apollodorus.pages.dev/video. Users load videos into the browser, apply a set of operations uniformly across all of them, and receive the edited files — mirroring the workflow of the creator's earlier batch image editor, also called Apollodorus.

According to the HN post, the project grew directly out of that prior image tool, which supported crop, resize, watermark, and similar operations applied uniformly across a batch of images. The developer, posting under the handle midnightbobarun, says the image version "worked fine in practice" before prompting the question of whether the same approach could extend to video.

The creator acknowledges in the HN post that client-side video editing is technically demanding, particularly for users on older or low-powered hardware — citing old PCs, phones, and decade-old Chromebooks as scenarios where performance could degrade. Despite that, the rationale for building it anyway centers on access: the developer notes they cannot install desktop video software on a work computer due to IT restrictions, and that a website accessible from any device sidesteps that constraint entirely. Because nothing leaves the browser, slow network connections and privacy concerns are also removed from the equation.

The tool is positioned as a practical workaround for constrained environments rather than a replacement for professional editing software. No pricing, company, funding, or team size is mentioned in the source material — this appears to be a solo side project released publicly via Hacker News.