Hi HN! I'm Luke from Kino (https://kino.ai). Kino lets you make great videos with your agents and your teammates. Storage of footage and assets, a rich video editor, and review links for teammates are all bundled into one. Your colleagues and Codex / Claude Code can work on the same timeline with review notes and footage all in one place. See a basic overview at https://kino.ai/walkthrough-video and our launch video (made entirely with Kino!) at https://kino.ai/launch-videoOpus 5.5 can edit videos and make great motion graphics now. But with a raw agent harness, you need to describe tiny edits either in words or in quick one-off UIs, you can’t refer to footage shared across your devices, and feedback from teammates comes as screenshots on Slack.Kino is code-first. All editing, all motion graphics, all dragging of timeline items around, all teammate comments, and all 3D scenes are expressed as code, built on Remotion. This was hard to get right, as we found ourselves building a what-you-see-is-what-you-get editor for React, which we then turned into a video editor. For our launch video I told Claude-with-Kino to find a macOS Leopard install disk and reskin our whole video to match.Kino is also fully collaborative and real-time, so you can see your teammates' cursors and exactly which part of the timeline they’re currently watching. For our launch video I had 5+ agents editing the timeline concurrently while my friend Donald had his swarm working a few minutes further down. Donald had one agent rotoscoping to make our visual effects work, I had an LLM color grading all media via our LUT support, and we both made tiny tweaks to the timeline along the way.To make this code-first editor work with video footage, everything gets transcribed, embedded, described, and face-detected. You can scrub your footage locally after you drag it in, but we upload a low-res proxy so your teammates and cloud inference can see it. This local scrubbing plus custom pro media decoders means you can drag a 250GB ProRes clip from your new iPhone right into your Kino timeline. We built custom decoders for professional codecs such as ProRes, BRAW, R3D, and more (see my extremely successful nine point HN post https://news.ycombinator.com/item?id=50198052). None of the performance we’re getting would have been possible before WebCodecs and libraries like Mediabunny.I grew up making YouTube videos, and during my undergrad at MIT I co-directed a 3.5 hour archival footage documentary on the history of my school and technological development in America (https://regressions.net). Much of the work was logging footage, managing hard drives, manually syncing Premiere project state, and planning our movie in a spreadsheet.Our first lau