Video Speed Changer

Change video speed online for free. Speed up (1.5x, 2x, 4x) or slow down (0.25x, 0.5x) MP4 and WebM videos with audio pitch control and private browser processing.

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How to use Video Speed Changer

  1. 1

    Upload your video file (MP4, WebM, or MOV) into the dropzone.

  2. 2

    Select a speed preset (0.5x, 1.25x, 1.5x, 2x, 4x) or use the custom slider.

  3. 3

    Choose whether to retain audio with pitch adjustment or mute audio for timelapse.

  4. 4

    Preview the fast-forwarded video live in the player and click Export Video.

Why use this tool?

Fast-Forward & Slow-Motion Presets

Instantly toggle between popular speed multipliers from 0.25x ultra-slow-mo to 4x high-speed fast forward.

Audio Pitch Control & Muting

Preserve original vocal pitch with synchronized time-stretching or mute the audio track entirely for timelapse reels.

Private Dual-Engine Processing

Export videos directly inside your browser or use high-speed server rendering with zero quality loss.

Frequently asked questions

Can I speed up a video and keep the sound?

Yes. Our video speed changer automatically applies audio time-stretching to keep pitch natural without squeaky chipmunk distortions, or you can choose to mute audio completely.

What video formats are supported?

MP4 (H.264/H.265), WebM, and MOV are fully supported. You can export the resulting video as MP4 or WebM.

Is there a limit on video duration or file size?

In-browser processing has no strict file size limits and processes locally on your device. Server processing supports files up to 150MB with instant frame-rate conversion.

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