AI Video Editor: Auto-Captions, AI Voices, and 4K Export Free
AI video editor that captions, trims and adds voiceover for you. Edit faster with smart tools, then export up to 4K. Free, in your browser, no download.
AI Video Editor: Auto-Captions, AI Voices, and 4K Export Free Features
EchoWave's AI video editor is trusted by creators, podcasters, marketers, and educators around the world
AI editing in your browser
Auto-captions, AI voices, and voice cloning in one editor
EchoWave brings ASR transcription, 63 streaming AI voices, and 160+ animated subtitle presets into a single browser-based timeline. Generate word-level karaoke captions, clone your voice in AI Studio, and translate subtitles into 50+ languages without switching tabs. For full manual editing controls like trimming, cropping, and merging, see our Online Video Editor.
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4K H.264
Maximum export resolution on paid plans
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63 AI Voices
Text-to-speech voices available across multiple languages
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160+ Presets
Subtitle and caption animation styles including karaoke
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Free to Start
No credit card required. Small watermark on free exports, removed on paid plans.
AI features
Every AI tool you need in one editor
From auto-captions to voice cloning, EchoWave's AI features cut production time without cutting quality.
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AI Auto-Captions
Generate word-level captions automatically from your audio using built-in ASR. Choose from 160+ subtitle presets including TikTok-style karaoke animations and MrBeast-inspired pop effects. Try the auto subtitle generator directly.
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AI Text-to-Speech (63 Voices)
Pick from 63 streaming AI voices across multiple languages and accents, type your script, and the editor places the audio on the timeline. All voices render at broadcast quality. Learn more about adding a voiceover to video.
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AI Voice Cloning
Clone your own voice and use it to narrate any project inside AI Studio. Record a short sample, then generate unlimited speech that sounds like you. Voice samples are processed securely and used only for your projects.
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AI Studio
EchoWave AI Studio is your command centre for script-to-speech segments. Sequence multi-voice dialogue, audition clones, and drop finished audio straight into the timeline.
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Subtitle Translation
Translate auto-generated captions into 50+ languages without leaving the editor. Ideal for repurposing one video into multiple regional cuts. See also add subtitles to video.
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Multi-Track Timeline
Rearrange, split, and trim clips on a magnetic multi-track timeline. Adjust speed, crop, rotate, flip, and add keyframe animations without leaving the browser.
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Music Visualizer and Audiogram
Turn any audio file into a shareable video with FFT spectrum waveforms, audiogram bars, and lyric-video templates. Perfect for podcasters and musicians. Explore the music visualizer.
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4K Export and Format Conversion
Export finished projects in 4K H.264, WebM, MOV, or GIF. Paid plans remove the EchoWave watermark and enable maximum resolution.
How it works
How to edit video with AI online
Four steps from raw footage to a polished, captioned video ready to post.
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Upload Your Video
Drag and drop your footage into the browser-based editor. EchoWave accepts MP4, MOV, WebM, AVI, and dozens of other formats with no file conversion needed before you start.
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Apply AI Features
Click Auto-Captions to transcribe your audio instantly, choose a karaoke or subtitle preset, add an AI voiceover or cloned voice, and stack overlays, text, and music on the multi-track timeline.
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Refine and Customise
Trim, split, crop, speed-ramp, and keyframe-animate any clip. Translate your subtitles to another language, adjust waveform styles, or add your logo and watermark.
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Export and Share
Export in 4K H.264, choose your aspect ratio (landscape, portrait, square), and download directly to your device. Paid accounts remove the watermark and enable the highest resolution settings.
Sized to post
The right format for every platform
Pick an aspect ratio preset and EchoWave frames your video to fit, ready to post without re-cropping.
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9:16 Vertical
- TikTok
- Reels
- Shorts
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1:1 Square
- X
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16:9 Widescreen
- YouTube
- X
Who uses it
Built for creators, marketers, and teams
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Content Creators and YouTubers
Add word-level karaoke captions and AI voiceovers to long-form or short-form content. Export in portrait or landscape to cover every major platform.
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Podcasters and Audiogram Makers
Convert podcast audio into shareable video with animated FFT waveforms and auto-generated transcripts. Post audiograms to Instagram, LinkedIn, or YouTube without a separate app.
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Social Media Managers
Produce captioned reels and TikToks with 160+ animated subtitle presets. Translate one master video into multiple language cuts using built-in subtitle translation.
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Small Business and Marketing Teams
Build branded video ads using templates, bulk CSV data, and AI text-to-speech. The REST and MCP API lets teams automate large-scale video production pipelines.
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Musicians and Lyric Video Makers
Sync lyrics to your track using the music-visualizer and lyric-video engine. Waveform and FFT spectrum animations add a professional production layer with no design skills needed.
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Educators and Course Creators
Record screen and camera simultaneously, add auto-captions for accessibility, and export a polished lesson video with chapter text overlays and a voiceover.
Start editing with AI today
Upload your footage and let EchoWave handle the captions, voices, and export.
What people are saying about EchoWave
AI Video Editor FAQ
Is EchoWave AI video editor free?
Yes. EchoWave is free to use with no time limits on projects. Free exports include a small EchoWave watermark. Upgrading to a paid plan removes the watermark and enables 4K resolution exports.
What AI features does EchoWave include?
EchoWave includes AI auto-captions (ASR transcription), 160+ animated subtitle presets with karaoke word-level animation, subtitle translation into 50+ languages, AI text-to-speech with 63 voices, AI voice cloning, and AI Studio for multi-segment scripted speech.
Can I edit videos with AI without downloading software?
Yes. EchoWave runs entirely in your web browser. There is nothing to install. You can upload footage, apply AI captions and voices, edit on the timeline, and export, all from Chrome, Firefox, Safari, or Edge.
How accurate are the AI-generated captions?
EchoWave uses automatic speech recognition (ASR) to generate captions. Accuracy is highest for clear English speech and improves when you review and correct the transcript inside the editor before applying a subtitle style. Translated subtitles are machine-translated and should be reviewed for tone-sensitive content.
Can I clone my voice in EchoWave?
Yes. EchoWave AI Studio supports voice cloning. You record a short voice sample and the system learns your vocal profile. You can then generate unlimited speech in your own voice and add it to any video project.
What video formats can I export from EchoWave?
The editor export UI produces MP4 (H.264). The render and convert pipeline also supports WebM, MOV, and GIF output. If you need a specific format, EchoWave has a dedicated convert library covering dozens of formats.
Does EchoWave have an AI voice-over feature?
Yes. The Add Voiceover tool lets you pick one of 63 AI voices, type or paste your script, and the editor generates and places the audio on the timeline automatically. Voice cloning via AI Studio lets you use your own voice instead.
How is this AI video editor different from the standard EchoWave video editor?
The standard EchoWave video editor covers all general editing tasks such as trimming, cropping, merging, and adding text. This AI video editor page focuses specifically on AI-powered capabilities: auto-captions with 160+ animated presets, AI text-to-speech, voice cloning, AI Studio, and subtitle translation. Both tools share the same editor, so you can use any combination of features in one session.
Is EchoWave safe to use? Who makes it?
EchoWave is made by Lemon Vault LLC. Your uploaded files are processed on secure render servers and are not shared with third parties. The editor runs in your browser, so footage never leaves your session unless you choose to export or save a project.
Ready to edit with AI for free?
No credit card required. The free plan includes a small EchoWave watermark.
Get Started →
