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The Timeline Was Split, but the Audio Wasn't: Fixing Source Offsets in a Browser Video Editor

This is a submission for DEV's Summer Bug Smash: Clear the Lineup powered by Sentry . Project Overview Timeline Studio is a local-first AI video edito…

devchallengebugsmashjavascriptwebaudio
Dev.to Jul 20, 2026, 05:48 UTC
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A Browser Ear-Training Trainer in 350 Lines — Equal-Temperament Frequencies and Three Web Audio Footguns

Reading a music-theory textbook is one way to drill relative pitch recognition. Loading a webpage is another. This is a 350-line ear-training trainer …

javascriptwebaudiomusicfrontend
Dev.to May 13, 2026, 00:59 UTC
EN

TIL canvas.captureStream() is video-only — here's how I mixed voiceover + music into a MediaRecorder export" published: true

TL;DR — canvas.captureStream() only carries video tracks. To get audio into your MediaRecorder export you need to build an AudioContext graph that let…

javascriptwebdevreactwebaudio
Dev.to May 10, 2026, 17:31 UTC

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