Aval: An Open-Source Format for Interactive Web Video
Dimillian · x · 2026-07-15
This post highlights a new project called **Aval**: an open-source format for interactive web videos. It features a built-in state machine, frame-accurate transitions, and transparency support via alpha channels. The author calls it one of the "craziest" things they’ve built with Codex. Before AI assistance, this technology would have taken months to develop, making it unfeasible for non-commercial open-source projects. Although Airbnb's similar project, Lava, served as inspiration, Lava was never open-sourced, prompting the author to build their own version. Aval includes both a **compiler** and a **web renderer** to power this interactive video capability.
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