Increase video volume

1. Choose the video (MP4, MOV, WebM or MKV) or a sound file (MP3, M4A, WAV and more). It's measured right away, on your device: you see how loud it is in LUFS and its loudest peak.
2. Pick how loud. Social video brings it to -14 LUFS, Podcast to -16 LUFS, or Turn it up by sets the change yourself, up to +20 dB.
3. Listen. Play it and switch between Before and After. Turn your own volume down first: a quiet video can come up a long way.
4. Press Turn it up and download it: a video comes back as an MP4 (or a WebM), a sound file as an MP3. The picture is copied as it is, so it's quick.

Loudness is measured in LUFS, over the whole video, rather than by its loudest moment. These are the levels that are published, and what people aim for where there isn't one:

A talking video straight from a camera, a call recording or a podcast mixed for headphones often measures well under -14 LUFS, and sounds weak next to everything else in a feed. The meter above tells you where yours is and how far it has to come up.

A file can only hold sound up to a point, 0 dB at its peaks. Turn a video up by 10 dB and every peak goes 10 dB higher; any that pass 0 dB are cut flat, and you hear a crackle or a buzz on the loudest words. That's why the volume slider in most editors stops being useful long before the voice is loud enough.

This tool looks a few milliseconds ahead, and just before a peak would go over -1 dB it turns the sound down for that moment, then eases back. Speech has a few short peaks well above the rest, so holding them down costs nothing you'd hear and lets the whole voice come up. After it's done, it tells you how far the limiter had to go.

Louder also brings up what's under the voice. If there's a fan, hum or traffic, take it out first with the background noise remover, then turn the clean sound up. Adding a song? Set the voice's level here, then mix the music under it with add music to video.

On TikTok, Reels and Shorts, a quiet video can lose people in the first second: it plays after a loud one, and the volume they had set is suddenly too low. Clips cut from podcasts, streams and calls are often the quietest, recorded for headphones rather than a phone speaker.

Clyper makes those clips: paste a YouTube link or upload a long video, and it finds the moments worth posting, cuts each one on whole sentences, frames it vertically on whoever's talking and captions every word. See podcast clips for how it handles a conversation.