Beat Sync: Cut Your Video to the Beat
Upload your clips and a song. EchoWave listens to the music, maps every beat, and snaps your cuts to the rhythm. It is the trick that makes montages, slideshows and reels feel professionally edited. Free, in your browser.
Beat Sync: Cut Your Video to the Beat Features
Creators, families and social teams use EchoWave's beat sync to make montages that move with the music
Cuts on the beat, automatically
Real beat detection inside a real video editor
Most editors leave beat matching to your eyes and patience: zoom into the waveform, guess where the kick lands, nudge every cut by hand. EchoWave analyzes your soundtrack the way audio software does, finds the tempo and every beat, then retimes your photos and clips so each cut lands exactly on the music. A beat grid appears right on the video editor timeline, so manual trims snap to the rhythm too. Building a photo montage? The same engine powers the slideshow maker.
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Free
Beat detection and syncing are free to use in your browser, no install
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50-220 BPM
Finds the tempo of everything from ballads to drum and bass
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56 transitions
Crossfades and effects timed to the beat interval of your song
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4K
Export the finished beat-synced video at up to 4K on paid plans
How it cuts
What Beat Sync actually does
Not a template and not a filter: real audio analysis driving real edits on a multi-track timeline.
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Real Beat Detection
EchoWave decodes your audio and runs onset analysis on the waveform: it finds the tempo, tracks every beat even through quiet intros and slight drift, and estimates the downbeat of each bar. The analysis runs on your device, so nothing extra is uploaded.
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One-Tap Sync
Pick a cutting pace and hit Sync. Photos stretch to fill the rhythm, videos are trimmed to fit, gaps close, and every boundary lands on a beat. The whole sync is a single undo step, so experimenting is risk-free.
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Auto Pacing That Follows the Energy
The Auto mode reads the energy of the song and cuts faster in loud sections, slower in quiet ones, and pulls longer cuts onto the downbeat. Choruses hit hard, verses breathe, exactly like a human editor would pace it.
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A Beat Grid on Your Timeline
After analysis, beat markers appear on the timeline ruler and across the tracks. Every drag and trim snaps to them, so the edits you make by hand stay on rhythm. Pair it with the music visualizer for an audiogram look.
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Transitions on the Beat
Choose hard cuts for punchy montages or crossfades sized to the beat interval of your track. Transitions land between clips at the exact moment the music turns over. See all styles in the online video editor.
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Smart With Photos and Videos
Photos have flexible durations, so they snap to any pace. Videos are trimmed intelligently and never run out of footage mid-beat: if a clip is too short for the chosen pace, Beat Sync falls back to the nearest reachable beat and keeps the chain tight. Fine-tune afterwards with the video cutter.
How it works
How to sync video to a music beat
Four steps from raw clips to a montage that moves with the music.
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Upload Clips and a Song
Drag your photos or video clips onto the timeline, then add your music track. Any common format works: MP3, WAV and M4A for audio, JPG, PNG and MP4 for visuals.
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Detect the Beat
Open Beat Sync from the music clip. EchoWave analyzes the track in seconds and shows the BPM, every detected beat, and exactly where your cuts will land on the waveform.
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Choose Your Pace
Cut on every beat for high energy, every 2 or 4 beats for a calmer flow, or pick Auto to follow the energy of the song. Add beat-timed crossfades if you want softer changes.
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Sync, Preview, Export
Hit Sync and the timeline snaps into rhythm, then plays back instantly so you can feel the result. Export up to 4K when it is right. One undo restores the previous layout at any time.
Sized to post
Beat-synced for every platform
Resize the same synced edit for each feed, no re-editing needed.
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9:16 Portrait
- TikTok
- Reels
- Shorts
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1:1 Square
- X
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16:9 Landscape
- YouTube
- Vimeo
- Presentations
Popular uses
What people beat-sync
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Photo Slideshow Memories
Birthdays, weddings and anniversaries: drop in your photos, pick the song that matters, and every photo change lands on the music. Quiet verses linger on each memory, the chorus picks up the pace. Start from the slideshow maker.
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Travel Montages
Cut a trip's worth of clips to a driving soundtrack. Auto pacing keeps establishing shots long and action moments quick, and the whole recap feels edited with intent. See the travel video maker.
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TikTok and Reels Edits
Trend formats live and die on beat timing. Sync your clips to the sound, add captions, and export vertical. The reels maker covers the format side.
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Music Videos
Cut performance takes and b-roll on the bar lines of the track. The beat grid keeps long-form edits musical even when you place every cut by hand. Built on the same engine as the music video maker.
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Sports and Gaming Highlights
Land every goal, clutch and knockout on a hit. Fast songs plus one-beat pacing turn raw highlights into montages that feel scored rather than assembled.
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Product and Brand Promos
Give product shots a rhythm: consistent, musical cuts read as polish. Add a logo, brand colors and beat-timed crossfades, then export in 4K for ads and pitches.
Hear your edit click into place
Upload clips and a song, tap Sync, and preview the result in seconds.
How creators use EchoWave in real projects
About the EchoWave team
EchoWave is a browser-based video and audio editor built by Lemon Vault LLC since 2018. The people who build the editor write these guides and test every step in the production app before publishing.
Beat sync FAQ
What does beat syncing a video mean?
Beat syncing places your cuts and transitions exactly on the musical beats of your soundtrack, so the visual rhythm matches the audio. It is the single biggest difference between a montage that feels professionally edited and one that feels randomly assembled. Editors have always done it by hand; EchoWave automates the tedious part.
How does EchoWave detect the beat?
It decodes your audio in the browser and runs onset analysis on the waveform: it measures the tempo between 50 and 220 BPM, tracks each beat through quiet passages and small tempo drift, and estimates the downbeat of each bar. The analysis runs on your device as part of the editor, and the beat grid is saved with your project.
Can I sync a photo slideshow to music?
Yes, and it is the sweet spot. Photos have flexible durations, so every photo change can land exactly on a beat. Choose the Auto pace and the slideshow cuts faster in energetic sections and slower in quiet ones, which is exactly how a human editor paces a memory reel.
Which pace should I pick: every beat, 2 beats or 4 beats?
Every beat suits fast, high-energy montages like sports and gaming highlights. Every 2 beats fits most social edits. Every 4 beats gives a relaxed, cinematic feel that suits slideshows and travel recaps. Auto mixes them by following the loudness of the song, and pulls longer cuts onto the start of each bar.
What music formats work?
Anything your browser can play: MP3, WAV, M4A and AAC all work, along with OGG in most browsers. If a file cannot be decoded, EchoWave tells you straight away instead of failing silently.
Do I lose my edit if I do not like the result?
No. The whole sync is applied as a single history step, so one undo (Ctrl or Cmd+Z) restores the exact layout you had before. You can re-run Beat Sync with a different pace or transition style as many times as you like.
Can I still adjust cuts manually afterwards?
Yes. After analysis, the beat grid stays visible on the timeline ruler and every drag or trim snaps to the beats, so manual adjustments stay on rhythm. You can toggle the beat grid off from the timeline toolbar whenever you want free-form editing.
Does beat sync work on mobile?
Yes. Detection, preview and apply all work in mobile browsers, with the same controls presented as a bottom sheet. Larger music files take a little longer to analyze on older phones, but the flow is identical.
Ready to cut to the beat?
No credit card required. The free plan includes a small EchoWave watermark.
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