Cards
Image/video will render behind the text. Dim controls how “bump-black” it feels.
Audio (optional)
Upload a song/beat. Export will mux it into the MP4 (trimmed to the bump length).
Look
Background (optional)
Export
First export will download ~32MB ffmpeg-core (WASM). After that it’s cached by the browser.
Ready.
Notes
- This app records the canvas to WebM, then uses ffmpeg.wasm to convert + mux audio into MP4.
- MP4 video codec is
mpeg4for broad compatibility without extra encoders.
Preview
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