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// swap the soundtrack
Video audio replacer
Drop a video and a new audio file — the video's own sound is dropped, the new track takes its place, and you get one combined file back.
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How the swap works
The video plays through once, muted, while the new audio plays alongside it — both get recorded together into one new file. The result follows the video's length: if the new audio is shorter it goes quiet for the rest, if it's longer the extra gets cut off.
What happens to the original audio?
It's dropped entirely — only the new audio file ends up in the result.
Is my video or audio uploaded anywhere?
No — everything, including the recording step, happens entirely in your browser. Nothing is uploaded.
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