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Shahi Tempo Changer

Audio & Video Tempo Studio

Engine loading…
SHAHI MUSIC TOOL

Change tempo. Separate vocals. Prepare clean originals.

Speed up or slow down audio and video, preserve vocal pitch, keep video synchronized, and use local AI to separate vocals from the music for media you own or are authorized to use.

🔒 Local processing
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Choose a file

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Tempo controls

Tempo 100%
New duration
50%100%150%200%
Load a file to preview.
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AI vocal separation

AI • Local
Separate vocals from all music Creates two independent WAV stems: Vocals and Music / Instrumental. HTDemucs runs in your browser; your song is not uploaded by this app.
Engine not loaded First separation downloads an AI model of about 172 MB. WebGPU is used when available; otherwise it falls back to WebAssembly.
Best results Use a clean stereo master. Separation quality depends on the original mix; reverb and tightly layered instruments can leave small artifacts.
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Process & export

Original / authorized media only This app improves export quality and workflow. It does not bypass copyright, fingerprinting, or platform recording-match systems.
Pitch LockUses tempo processing to keep vocals near the original key.
Video SyncVideo timing is adjusted to match the new audio duration.
PrivacyYour media is processed in your browser, not uploaded by this app.