Make a modern slick and punchy video for this announcement: [content of the blogpost in markdown]
Make it yours. Replace "[content of the blogpost in markdown]" with your own announcement. "modern slick and punchy" is the only style direction, so name colors or a format there if you want a different look.
Launch video for the Wasmer SDK for Swift
A 47-second launch video for Wasmer's Swift SDK, which runs Python, Node.js and Clang sandboxes inside iOS and macOS apps. Opus 5.5 one-shotted it from one line plus the pasted blog post, as timed JavaScript animations on an HTML page recorded with FFmpeg.
“This is what Claude Opus 5.5 one-shotted (tl;dr: we went viral)”
You'll need
- Your announcement or blog post as markdown, pasted in place of the placeholder
- FFmpeg
How it was made
The second line is the creator's placeholder: they pasted the announcement blog post in as markdown. In their words, it "creates an HTML page and uses raw JS timed animations" and then "records it with ffmpeg"; they believe it captured each frame as a PNG. Their earlier hand-made launch videos took about 12 hours (Edge.js) and 6 hours (an earlier Wasmer SDK video). The comment doesn't name the app or harness. The video went out on Wasmer's X account.
Posted Sep 24, 2026 · Hacker News
Prompt from: Hacker News comment, in a code block
Launch post on X with the video
Look notesby Reference
A dark, glowing launch film of big bold headlines with phone mockups, a grid of runtimes, an architecture strip, a Swift code window and a benchmark counter, closing on a Wasmer × Swift end card.
- Color
- Charcoal ground with blurred orange and violet glows; white type with an orange-to-magenta gradient on key words.
- Type
- Heavy rounded sans-serif headlines in white with gradient accents ("Swift app.", "WasmerShell", "20,333"), small orange spaced-capital eyebrows above them, and monospace for code.
- Framing
- A headline at the left or top center with one supporting element: three phones, a five-by-two grid of tool tiles, two platform cards, a code window, or a counter over two bars; a small Wasmer logo in the lower left.
- Structure
- "Swift SDK", sandboxes in your Swift app, WasmerShell on three phones (Python, Node.js, FFmpeg), a grid of what runs on the iPhone, iOS meets WebAssembly, one API for iOS 27+ and macOS 12+, create a sandbox and run a command in code, a Richards.js benchmark (20,333), and the end card with the GitHub link and wasmer.sh.
