Mute video & remove audio online — free, no upload

Remove sound from MP4 and MOV videos right in your browser. Strip the audio track from the entire file or mute specific subclips via lossless stream-copy without re-encoding — no watermark and no server uploads.

  • Free
  • No watermark
  • Nothing is uploaded
  • No install

HOW IT WORKS

Three steps, start to finish.

  1. 01

    Open your local video

    Select up to 20 MP4 or MOV files per session (each under about 2 GB). CutCull keeps read-only references; nothing is uploaded.

  2. 02

    Click the Mute toggle

    Click the speaker icon on the full-clip row to silence the entire video at once, or mark In/Out ranges to mute only chosen clips.

  3. 03

    Export a silent MP4

    Generate a brand-new MP4 with the audio track completely removed, verified for clean playback before you download.

WHAT IT DOES

What you get

Lossless stream-copy (no re-encoding)

When you only mute or trim without image/speed edits, CutCull copies the original video stream directly and drops the audio track in seconds with zero quality loss.

Truly removes the audio track

Instead of just zeroing volume, exported files carry no audio stream at all — smaller file size and guaranteed silence everywhere you upload.

Preserves HDR video as-is

Because pure muting uses lossless stream-copy, iPhone Dolby Vision / HLG and camera HDR10 videos keep their original HDR bitstream intact.

Whole video or selected clips

Mute an entire wind-noisy B-roll file in one click, or extract multiple clean clips and decide audio on or off per clip.

Combine with speed, reverse, or grade

Need slow-motion B-roll, reversed clips, color grading, .cube LUTs, or cropping too? Combine them with Mute in one export.

WHY NOTHING IS UPLOADED

Remove audio without uploading your video

Demuxing and MP4 packaging run locally inside this browser tab with WebAssembly. CutCull never receives your videos, audio, or file names.

HONEST LIMITS

What the WebApp can and cannot do

Sessions hold up to 20 files, each under about 2 GB. Muting removes the entire audio track on the exported clip (CutCull does not replace audio, add background music, or isolate vocals). Desktop Chrome or Edge is recommended for large files.

QUESTIONS

Answers before you start.

Is removing audio from a video free and without watermarks?
Yes. Muting videos and stripping audio tracks in CutCull is completely free in your browser and never adds a watermark.
Does muting a video reduce its visual quality?
No. When you mute a video without changing its image, speed, or playback direction, CutCull uses lossless stream-copy to copy the exact original video frames while dropping the audio stream — zero re-encoding and zero quality loss.
Can I mute only part of a video or export multiple silent clips?
You can mark multiple In/Out subclips on one video and toggle Mute independently on each exported clip. CutCull exports each range as its own standalone MP4 rather than stitching a multi-track timeline.
Is my video uploaded to a cloud server?
No. Everything happens locally on your device inside the browser. Your original video file remains untouched.