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audo

Online video and audio editor

Trim, cut, fade, and clean up video and audio in your browser — with synced video preview and MP4, WebM, MP3, or WAV export.

10M+ files processed since 2021

Stays on your device

How to edit video and audio online

  1. 1

    Drop an MP4, MOV, or WebM video — or an MP3, WAV, M4A, or FLAC recording — into the editor, or press Record to start a new take.

  2. 2

    Watch the synced video preview above the waveform while you drag handles to trim the ends, cut out mistakes or pauses, add fade-ins and fade-outs, or adjust volume.

  3. 3

    Chain AI tools like Audio enhancer or Remove noise in place, then download your trimmed video as MP4 or WebM, or save sound only as MP3 or WAV.

Editing video and audio on one timeline

Audo's free online video and audio editor runs in your browser with no install, no watermark, and no sign-up. Upload an MP4, MOV, or WebM video or an MP3, WAV, M4A, or FLAC recording — or hit Record inside the Editor — to make clean cuts on your device.

Use the waveform to pinpoint where sound and picture line up thanks to the video preview synced to the timeline. Drag the playhead to find an exact word, trim the start and end handles, cut unwanted sections, and add fade-ins, fade-outs, or real-time volume adjustments with full video and audio control.

When you finish editing, export your trimmed video in MP4 or WebM, or save audio alone in MP3 or WAV. Because Audo's AI tools run on the same timeline, you can combine a quick video trimmer pass with studio voice cleanup, background noise removal, or captions — or hand longer multi-hour recordings over to Cut audio.

Questions

Is it free?

Yes, always, with no sign-up and no limit. Audo runs it in your browser, so there's nothing to pay for.

What types of video and audio files does the editor support?

Audo's online video editor and audio editor opens MP4, MOV, and WebM videos alongside MP3, WAV, M4A, and FLAC audio files, or lets you record right inside the card. You can also turn voice memos into uncompressed files with M4A to WAV, pull sound from iPhone clips with MOV to MP3, or switch containers in Convert audio.

How do I trim my videos online?

Pinpoint where speech and picture line up on the waveform, then drag the trim handles at the start and end or select a middle section and press Cut to remove mistakes and silences. The video preview updates frame by frame with every cut so you see how your clip shapes up in real time.

Can I add fades and adjust volume in the video trimmer?

Yes. You can apply Fade in and Fade out in a click and adjust volume from 25% to 400% on the whole timeline or a selected phrase while the video preview stays locked to your audio edits. For broadcast or podcast loudness targets, run Boost volume.

What formats can I export from the MP4 editor?

Download your edited video with picture and sound as MP4 or WebM, or export audio only as MP3 or WAV right in your browser. You can also convert to M4A, FLAC, OGG, and Opus from the download menu, or use the dedicated Audio editor when working with sound-only projects.

What AI tools can I chain inside the editor?

You can chain Audio enhancer, Remove noise, Remove echo, Remove silence, Remove filler words, and Transcribe audio on the same timeline without leaving the page. Every step creates a named version you can compare or undo at any time.

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