Audio to Video Waveform

A lightweight web application that converts audio and video files into MP4 videos with animated sound wave visualization directly in the browser. Suitable for quickly creating content for social media.

Functionality:

— File upload via drag and drop
— Multiple visualization modes: line, equalizer, and “space” mode
— Export settings (video size, wave color, sensitivity)
— MP4 rendering directly in the browser using FFmpeg.wasm — no files are uploaded to a server, all processing happens locally on the user’s device

Technologies:

— JavaScript
— WaveSurfer.js
— FFmpeg.wasm