In this guide
For a standalone file, try a supported short MP4 or MOV in the browser converter and check the downloaded WAV. For editing inside a video project, detach the audio in a mobile editor. Both retain speech, music and effects already mixed into the soundtrack.
To extract audio from a video on Android, choose a video-to-audio converter, select the video from your device, and save the resulting audio file. For a short compatible MP4 or MOV, Saturalabs' free browser tool can create a WAV locally. If you want to edit sound alongside picture instead, a mobile video editor can detach the soundtrack as a timeline layer.
First play the source video to confirm it has sound. Extracting its soundtrack keeps the dialogue, music and effects already mixed into it; it does not automatically create separate stems.
Which output do you need?
| Goal | Starting option | Check |
|---|---|---|
| Save the complete soundtrack as WAV | Try a short supported video in the browser converter. | Actual playback, duration, channels and file size. |
| Edit audio separately in a mobile video project | Detach the clip's audio in an editor such as CapCut. | Alignment and whether duplicate audio is playing. |
| Keep only the speaker, music or an effect | Compare an original separate track or source-isolation test. | Bleed and lost words, notes or sound-effect tails. |
| Preserve an encoded audio stream without re-encoding | Use a desktop workflow that supports stream copy. | Stream selection and container compatibility. |
Extract a WAV on Android in a compatible browser
- Choose a short source. Use an MP4 or MOV with audio, no larger than 50 MiB and no longer than five minutes. If the video is stored in the cloud, make it available on the device first. Keep the original.
- Open the converter. Visit Extract Audio from Video in a current browser and choose the file using the device picker. The video is read locally; the converter does not upload it or require an account.
- Prepare the WAV. Choose 48 kHz or 44.1 kHz and tap the conversion button. The browser must be able to decode the selected video's audio; the output must be mono or stereo and fit within 50 MiB. Device codec support and available memory can vary.
- Preview and download. Listen to the prepared WAV, then download it. In Chrome on Android, check Downloads or your Files app; Google's download guide explains where downloaded files can be found. Play the saved file, not just the preview.
If the phone cannot decode the file, try a compatible editor or a different supported source. A video extension does not guarantee a particular audio codec. For long files, multiple selectable audio tracks or a need to copy the original compressed audio, use the desktop extraction guide.
Detach audio in a mobile editor
CapCut's mobile instructions describe creating a project, selecting the video clip and choosing Extract audio to make an audio layer. After detaching, adjust that layer and listen with the picture. Controls can differ across app versions and devices.
A timeline layer is not automatically a standalone WAV or MP3. Check your editor's export choices and the saved file type. If audio sounds doubled, inspect whether the original clip and extracted layer are both audible. If you move the layer, check lip sync at the start and end. The CapCut extraction guide covers the desktop, mobile and web distinction.
WAV size, quality and timing
WAV can be much larger than the video's compressed audio. A 48 kHz, 16-bit stereo WAV uses about 11.52 MB per minute of PCM audio plus a small header. At that rate, five minutes exceeds this converter's 50 MiB output limit even if the source video itself is smaller. The tool rejects an oversized WAV rather than silently cutting it; use a shorter source or a desktop editor.
The WAV is decoded and resampled, not a byte-for-byte copy of the original stream. It cannot restore detail already lost in a compressed recording. Codec delay, padding or offsets can affect placement against video. Keep the source, note the start of any excerpt and check the final timeline using the audio replacement guide.
Need only the voice or music?
Extracting a soundtrack keeps its mixed sources. If the original microphone or music track is available, use that instead. Otherwise, compare a short separation attempt: in the voice isolator, describe “spoken voice” and review Isolated sound. Music, noise or other voices can remain, and wanted speech can change. The AI workflow accepts MP3, WAV, MP4 and MOV up to 50 MiB (52.43 MB); AI downloads require an account and sufficient credits, shown in the download dialog.
To keep music instead, follow the music extraction guide. The free local converter is a separate utility and does not perform AI isolation.
Common questions
Can I extract sound from an Android screen recording?
Yes, if the recording contains sound and the selected app can decode its format. Play the video first and check that the saved audio has the intended microphone and system sounds.
Can I rename an MP4 to MP3?
Renaming changes the filename, not the encoded contents. Export or convert the audio using a suitable tool and check that the resulting file plays.
Where is my downloaded WAV?
Check your browser's Downloads list or the device's Files app. The exact folder depends on your browser and download settings.