Scribeify

Alterar velocidade do vídeo online — Lento ou rápido

Acelere ou desacelere qualquer vídeo. Escolha entre 0,25× e 4×. O processamento acontece no seu navegador e o vídeo permanece privado.

Como usar Alterar velocidade do vídeo online — Lento ou rápido em 3 passos

  1. 1

    Select a video

    Drag and drop or browse. Supports MP4, MOV, AVI, MKV, WebM up to 2 GB.

  2. 2

    Pick the speed

    Choose from presets (0.25×, 0.5×, 2×, 4×) or enter a custom multiplier.

  3. 3

    Download

    Browser re-encodes the file and provides a direct download — no upload step.

Por que escolher Alterar velocidade do vídeo online — Lento ou rápido

  • Wide speed range

    From 0.25× slow motion to 4× time lapse, and any custom value in between.

  • Nothing uploaded

    Your video is processed entirely in your browser, never sent to a server.

  • Audio handling

    Choose to keep audio (pitch-shifted) or drop it entirely when changing speed.

  • Free and unlimited

    No sign-up, no watermarks, use as often as you want.

Quem usa Alterar velocidade do vídeo online — Lento ou rápido

  • Slow-motion sports

    Review a goal or a great play frame by frame by slowing clips to 0.25×.

  • Cooking time lapse

    Speed up a 30-minute recipe video to a watchable 3-minute time lapse.

  • Funny speed-ups

    Create the classic "sped-up voiceover" effect for social media posts.

Feito para criadores no mundo todo

Feito para criadores, jornalistas, estudantes e pesquisadores em todo o mundo.

Perguntas frequentes

How fast or slow can I go?
From 0.25× (quarter speed) to 4× (four times faster). Custom values are supported.
Does it keep the audio?
Your choice. You can keep audio (pitch will change with speed) or strip it.
Is this service free?
Yes, unlimited and without watermarks.
Will quality change?
Quality is preserved during re-encoding. For most content, no visible quality loss.
Are my files uploaded?
No. Processing runs in your browser via WebAssembly.
Does it support all video formats?
Input: MP4, MOV, AVI, MKV, WebM, FLV, WMV. Output: MP4.

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