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Audio trim & extraction

Trim audio or extract it from video.

Choose a supported audio or video file, select the exact time range, and export its first audio track as MP3, WAV, or FLAC. The self-hosted WebAssembly engine runs in a worker and reuses the loaded core for later exports.

Engine statusLoads on first export

500 MB file limit. Codec support depends on the FFmpeg core; browser preview support may differ.

MP4 → MP3MOV → WAV
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Choose media to begin

Audio trimming and extraction guide

Cut the part you need. Export the format that fits.

DRAVEX uses a self-hosted FFmpeg WebAssembly engine to trim audio files or extract the first audio track from supported videos. Choose the exact time range, preview it when the browser understands the source codec, and export MP3, WAV, or FLAC without sending the media file to a server.

01

Choose audio or video

Select a supported file up to 500 MB. The browser reads its duration and prepares a local preview when possible.

02

Set the time range

Move the start and end controls to keep a full recording or isolate one precise section.

03

Choose a format

Export a shareable MP3, an uncompressed WAV, or a lossless FLAC file and download it directly.

Start with the job

Audio trimming and audio extraction solve different problems.

Trim an audio file

Use the start and end controls to remove silence, shorten an interview, isolate a sound effect, save a music rehearsal excerpt, or prepare a concise voice note. DRAVEX encodes the selected section into a new file; it never cuts or overwrites the original.

Extract audio from video

Use a video source when you need the speech, music, meeting audio, or narration without the picture. The tool reads the first audio track and removes the video stream from the output.

Format guide

MP3, WAV, or FLAC?

MP3Best for everyday listening, easy sharing, broad device support, and a much smaller output than uncompressed audio.
WAVBest for editing, production handoff, and software that expects uncompressed PCM audio. Files are usually large.
FLACBest when you want lossless audio with more efficient storage than WAV and your destination supports FLAC.

Changing formats cannot create detail that is absent from the source. If an MP3 was already heavily compressed, exporting it as WAV makes a larger file but does not restore the removed information.

Browser preview vs conversion

Two media engines can understand different codecs.

The play button uses your browser’s built-in media support. The export button uses FFmpeg WebAssembly. A video may therefore fail to preview but still convert successfully, or its container may open while a particular audio codec remains unsupported. Clear error messages explain when the selected source cannot be processed.

Performance expectations

Local processing trades upload time for device work.

The FFmpeg core loads on the first export and is reused for later jobs in the same session. Conversion speed depends on file duration, codec complexity, output format, available memory, and whether the browser permits multi-threaded WebAssembly. Keep the page open until the download is ready.

For interviews and meetings

Remove setup chatter, isolate the useful discussion, and export MP3 for convenient review or WAV for a transcription and editing workflow.

For organized project delivery

Export a clearly named audio file, then use the PDF Studio to combine notes, release forms, or supporting documents.

Private by design

The source media stays on your device.

The FFmpeg engine, temporary working files, preview, trim settings, and final encoding all live in the browser session. DRAVEX does not need an account or a server upload to perform the conversion. Closing or refreshing the page clears the active session and temporary output URL.

Clear answers before you begin

Audio trimmer and extractor FAQ

Can I extract audio from an MP4 or MOV video?

Yes. Choose a supported video, set the time range, and export the first audio track as MP3, WAV, or FLAC. The exact input codecs supported depend on the bundled FFmpeg WebAssembly engine.

Can I trim an MP3 without uploading it?

Yes. Select the MP3, move the start and end controls, preview the range, and export locally. The source audio stays on your device.

Which output format should I choose?

Choose MP3 for convenient sharing, WAV for uncompressed editing workflows, or FLAC for lossless quality with a smaller file than WAV in many cases.

Why can FFmpeg process a file that the browser cannot preview?

The browser media player and the bundled FFmpeg engine do not support exactly the same codecs. A preview can fail even when FFmpeg can read and convert the audio track.

Does audio extraction improve sound quality?

No converter can restore detail that is missing from the source. WAV or FLAC avoids adding another lossy compression step, while MP3 creates a convenient 320 kbps output.

How large can my audio or video file be?

The tool accepts files up to 500 MB. Large files need more browser memory and can take longer because processing happens on your device.

Which audio track is exported from a video?

DRAVEX exports the first audio track. Videos with multiple languages or commentary tracks do not currently include a track selector.

Is the original media file changed?

No. Trimming and conversion create a separate download. Your original audio or video remains untouched.