How I Built Polished Demo Videos With Remotion, Claude Code, and Claude Cowork

In my previous post, I mentioned building “a demo video pipeline using Remotion” for my Timezone Scheduler on Day 4 of the project. That was one sentence. This is the full story.Why I stopped screen recordingScreen recordings are fine for a quick Slack walkthrough. For a public product page, they drove me up the wall.Thanks for reading! Subscribe for free to receive new posts and support my work.The dead time is the first annoyance. Waiting for a page to load, an accidental misclick, scrolling past the wrong section. You either ship an awkward video or learn timeline editing software to trim it. Neither option is fast.But the real problem is what happens next. You update a button label. You tweak the color scheme. You add a new feature. Now your demo video is stale, and the only way to fix it is to record the whole thing again. I went through this cycle three times before deciding there had to be a better way.And if you want both a desktop and a mobile version? Record twice. Edit…