Free Remove Audio from Video

Worked example

Drop "holiday.mp4", a 30-second phone clip of 42 MB with one stereo AAC audio track. There is no Start button. The first time, the page shows "Loading encoder…", then "Removing audio… 60%". When it finishes, a teal box says "✓ 1 audio track removed" and gives the size, with "42 MB → 41.5 MB: saved 512 KB (1%)" below it. The player under it is labelled "This preview is silent" and has no sound. Press the download button to get "holiday_muted.mp4". The picture is copied as it was, so quality is unchanged and the saving is only the size of the sound. If the clip had no sound at all, the box would say "✓ No audio track was detected in this video" instead.

Which settings to use, and the limits

• Drop the file and let it run. The mute starts as soon as the file lands, and "Cancel" stays on screen while it works. The tool copies the video stream and drops the audio, so nothing is re-encoded: it is quick and the picture is not touched. The result keeps the original container and extension, so a .mov stays a .mov, and is named like "holiday_muted.mov". If a run fails or is cancelled, a button appears to start it again. It reads "Try again" after a failure or a cancel.
• Keep one soundtrack by choosing which tracks to remove. If the video has more than one audio track, such as two languages, the panel "Audio tracks in this video" appears under the result. Each line looks like "Track 1: aac · stereo · eng", built from the codec, the channel layout and the language when the file states one. The first run removed every track, so all boxes start ticked. Untick the tracks to keep and press "Remove ticked tracks". Each press starts again from your original file, not from the muted copy. The button is greyed out while no box is ticked.
• Replace the sound instead of only removing it. Under "Or replace the audio", "Choose an audio file" takes .mp3, .m4a, .wav, .ogg, .opus, .flac and .aac files, or anything else the browser lists as audio. The picture is copied untouched and the new sound is encoded to AAC at 192 kbps, or to Opus at 128 kbps for a .webm file. The new sound starts at the beginning of the video, and the result ends where the shorter of the two ends. "Add a silent track" adds silence instead, which helps with apps that reject a video with no audio at all.
• Read the size line and the preview label. After a run, a line such as "42 MB → 41.5 MB: saved 512 KB (1%)" compares the original with the result. Only the audio is dropped, so the saving is small for most videos, and when the result is not smaller the line shows only the two sizes. The preview is labelled "This preview is silent" after a full removal and "Preview of the result" after replacing the sound or removing selected tracks. A video with no sound passes through unchanged, and the box says so.
• Send the result on to another tool. Under the download button, "Do more with this file" can pass the muted video to "Add music" or "Compress" in the same browser tab. The file is handed over inside the browser and nothing is uploaded. A link under the panel, "Want to keep the audio and drop the video instead? Use the audio extractor.", goes the other way.
• Know the limits. The tool takes one video at a time. A file above about 2 GB is refused on a normal computer, 1 GB on a computer reporting 4 GB of memory or less, and 400 MB on a phone, with the message shown under the drop zone. This tool copies the whole file into the engine's memory, so a file near the limit can still run out of memory. The first use downloads the engine, about 31 MB, and "Encoder ready" appears when it has loaded. Processing happens in your browser and nothing is uploaded.

Common problems and how to fix them

It says "Processing cancelled."

You pressed "Cancel". The tool stops the encoder at once and shows these words in the red box, even though nothing went wrong. The mute does not restart by itself. Press "Try again" to mute the same file. The engine normally reloads from the browser's cache, so there is no second 31 MB download.

It says "This file couldn't be read — it may be incomplete (still downloading or only partly copied) or not a real video/audio file. Try the original file again."

The engine's log contained a line such as "moov atom not found" or "Invalid data found when processing input". That means the file ends too soon or is not a real video, which is common with a download that has not finished or a copy that was interrupted. Wait for the download to finish, or copy the file again from its source, then drop it in again. Removing audio cannot repair a damaged file.

It says "This file is 2.6 GB, which is too large to process in your browser on this device (limit ~2 GB). Try a smaller file or trim a shorter clip first."

The numbers are your file and your device's limit: about 2 GB, 1 GB or 400 MB, as listed above. The check runs when you drop the file, before anything starts. Cut the video shorter first in the Video Trimmer, then mute the shorter file, or use a computer. This tool shows no caution for large files below the limit, so a big file can still fail later.

It says "The browser ran out of memory processing this file — it is too large for this device. Try a shorter clip, a smaller file, or a desktop computer."

This tool copies the whole video into the engine's memory and writes the result beside it, so both must fit at once. The message appears when the engine reports that it ran out of memory. Close other tabs, try a computer instead of a phone, or cut the video shorter first in the Video Trimmer and mute that.

The result box says "✓ No audio track was detected in this video", and the size did not change.

The engine's log listed no audio stream in your file, so there was nothing to remove and the output is a straight copy of the input. Some videos, such as screen recordings, have none. The file is still saved, with "_muted" in its name. If an app rejects the file for having no audio at all, use "Add a silent track" under "Or replace the audio".

How it compares

Removing audio here is a stream copy: the picture is not decoded or re-compressed, so nothing is lost and a long video finishes quickly. You can drop all tracks, drop chosen tracks, or swap in one audio file or a silent track. The new sound is the only part that is re-encoded. The tool cannot mute only a section, change the volume, or shift the new sound to start later than the picture. A desktop video editor can do those with a timeline, and handles files above the browser limits. In exchange, nothing is installed, there are no export settings to choose, and the video is processed in your browser and not uploaded.