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Remove background noise from video for free

Reduce background noise in your video’s audio for free. Compatible MP4 and MOV files keep the original footage. Compare the sound before downloading. No uploads or signup.

Denoise

Live Runs in your browser

Choose a video to reduce background noise

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MP4 MOV WEBM
Complete-file cleanup · Free · No upload

Hear background noise removal on a real recording

A 20-second flight-line interview processed with QuietTake. Switch tracks at the same playback position; levels are not matched, and results vary by recording.

Play the sample to load the audio and waveform

Sample / Aircraft maintenance interview on a flight line

Source: E-3 Sentry maintenance b-roll and interviews by Sgt. Michael Risinger, marked Public Domain by DVIDS. The video excerpt and cleaned audio are derived from this recording.

Noise removal runs on this device. Your recording is not uploaded to our servers or used to train models.

How to remove background noise from a video

  1. Choose a video

    Select an MP4, MOV or another supported video. The browser reads its audio track locally.

  2. Reduce noise in the soundtrack

    The speech model processes the audio on your device. Keep the tab open until the result is ready.

  3. Compare the sound

    Switch between the original and cleaned audio. Listen around quiet words, music and background voices.

  4. Download and review

    Compatible MP4 and MOV files keep the original picture. If the video cannot be preserved, save the cleaned M4A audio and keep the source video.

Video formats, downloads and limitations

Clean the sound while keeping the picture

This tool reduces background noise in speech, not grain or blur in video frames. Select the original video above. A compatible MP4 or MOV lets the tool copy its video track without re-encoding and replace the audio with cleaned speech. The source file stays unchanged on your device.

Download MP4 or save the audio

The video output is MP4 with the original video stream and a new 48 kHz mono AAC track. Stereo audio is mixed to mono; loudness is not normalised. Check speech, lip sync and the beginning and end before publishing. Extra tracks, subtitles and container metadata are not guaranteed to survive export.

Some files can be decoded for audio but cannot be saved as video. WebM or a video track that cannot be read may produce M4A audio only. Video export can fail for incompatible codecs or large files; in that case, extract the audio yourself and clean it separately. Keep your source video so you can replace its soundtrack in an editor. An MP4 extension alone does not guarantee compatibility.

Browsers, large files and recovery

Use a recent Chrome, Edge or Safari. A browser that cannot encode AAC saves the MP4 with Opus audio instead, which some apps and video editors cannot open. Files that need full decoding use more memory than indexed MP4/MOV. Long recordings take longer, and a device may not have enough memory for a large video export. Keep this tab open; try a shorter file if processing fails.

Listen before publishing

The balanced noise reduction setting is designed for speech. Background conversation can remain, music may be reduced, and clipping or heavy wind cannot reliably be repaired. This is not a guaranteed echo remover. Switch between Original and Cleaned and use the waveform to revisit words and breaths; a quieter background alone does not mean a better voice. See the audio processing limits.

Replace the audio yourself when needed

If you saved cleaned audio separately, use a video editor or FFmpeg on your device. For matching full-length files:

ffmpeg -i original.mp4 -i cleaned.m4a \
       -map 0:v:0 -map 1:a:0 \
       -c:v copy -c:a aac -b:a 192k \
       output.mp4

The command copies the video and encodes the replacement audio. Confirm duration and sync. For multiple cameras or separate microphones, choose and clean the relevant track before the final mix.

Video noise removal FAQ

Does noise removal upload my file?

No. Noise removal reads and processes your file in your browser. Your recording is not sent to our servers or used to train models. Other tools explain their own data processing before you use them.

Is the whole recording free to process?

Yes. You can process the entire recording and download the result for free, without an account or payment details. Practical limits depend on your device and browser.

Will noise removal change the video image?

For compatible MP4 and MOV files, the video track is copied without re-encoding. Only the audio is replaced with mono AAC. This tool does not remove grain or blur from the image.

Why did I get an M4A file instead of a video?

If the audio can be read but the video track cannot, the result may contain only M4A audio. Keep the source video so you can replace its soundtrack in an editor. If export fails altogether, extract the audio in an editor and process that file separately.

Can I remove music or a specific person’s voice?

The model enhances speech and does not let you choose which speaker to keep. Other voices may remain, and music may be reduced. Check the result before using it in your video.

Can I process a long video?

Processing time and file size limits depend on your device. MP4 and MOV files with a readable index can be processed in blocks; other formats may need more memory. Keep the tab open and try a shorter clip if processing fails.

Which browsers can I use?

Use a recent version of Chrome, Edge or Safari. Export uses AAC audio; browsers that cannot encode AAC use Opus instead, which some apps and video editors can't open. If the tool reports that no encoder is available, try another browser.

FIELD GUIDE

Reduce noise in a video soundtrack without changing the picture

Video noise removal processes the soundtrack while retaining the compatible source picture. Compare the sound at matching moments, then verify the exported video and audio before replacing the original.

Know what part of the video changes

The tool reduces background noise in the audio track. Compatible MP4 and MOV picture tracks are copied without video re-encoding, while audio is replaced with mono AAC. The tool does not clean visual grain, stabilize footage or remove a soundtrack element you did not select.

Choose a source with speech you can hear

A clearer source gives speech enhancement more detail to preserve. Steady room tone can be easier to reduce than overlapping speakers, music, clipping or wind. If the speaker is buried under loud sound or the recording is already distorted, look for a cleaner source rather than expecting processing to rebuild missing words.

Compare the original and processed sound

Use the same passage before and after processing. Listen for consonants, names, short words and sentence endings; then check whether breaths and background ambience still sound natural. Headphones help reveal speech that has become watery or thin. The picture staying the same does not mean every sound was removed.

The same video picture remains unchanged while a noisy soundtrack becomes cleaner after audio processing.
Illustration of an unchanged picture track and processed audio; it is not a measurement.

Understand video and audio fallback

If the browser can read the audio but not the video track, the output may be M4A rather than a video. Keep the source video and replace its soundtrack in an editor if needed. If the file cannot be processed at all, try a browser-readable MP4 or MOV with a compatible audio codec.

Check the complete export

Play the output from beginning to end. Confirm that the picture plays, sound stays synchronized, and no important words were softened. If the result is audio-only, check that you selected the video workflow and that the browser could read the source video track.

Keep the original and the sound you still need

The model enhances speech; it does not let you select which speaker to keep. Other voices may remain and music may be reduced. Because audio is replaced, keep the original for alternate mixes or soundtrack comparison. Processing runs in the browser and the selected video is not uploaded.

Before sharing the cleaned video

  • The original picture remains intact in the exported file.
  • The target speech is clearer without important words disappearing.
  • Music and other speakers sound acceptable for the use.
  • The saved video plays with synchronized audio from start to end.
  • The source video is kept separately from the processed export.