Paste a YouTube playlist, turn on automix: the mixer starts playing on its own, moving from one video to the next without leaving gaps between tracks.
Listening to a YouTube playlist has an annoying flaw: there's almost always a gap between the end of one video and the start of the next — a moment of silence, the next video loading, sometimes even a few seconds of ads. YouTube Mixer exists to eliminate exactly that gap.
It's designed to be immediate: paste the link of any YouTube playlist, turn on automix, and from that moment the mixer takes over. No need to manually pick each track or hit play on every video change: once started, the mix keeps going on its own through the whole playlist.
As a track nears its end, the mixer is already preparing the next one and overlaps them: the next video's start plays while the previous one is still fading out, exactly like a DJ moving from one song to the next without breaking the flow. The result is continuous listening, without the usual gap you hear scrolling through a normal playlist.
This applies to both audio and video: the scene change at the end of one clip and the start of the next are mixed together, not simply placed back-to-back.
The crossfade between tracks is handled with the browser's native Web Audio API, which allows precise control over volume and timing overlap between the outgoing and incoming source, while preloading the next video avoids the buffering dead time normally noticeable at a track change.