Add a natural AI voiceover to any video
Features you'll love:
Realistic, natural voices
Choose from dozens of voices spanning accents, styles, and tones. Our generated voiceovers sound human and natural, without the typical markers of an "AI voice."
Auto-captions that enhance delivery
Our caption generator automatically times on-screen text to voiceovers so people stay engaged. That's how top faceless video channels get such a big audience.
Flexible workflows
Start with a video, script or even just an idea. Captions can add voiceovers to existing footage or make the entire video for you, in one workflow.
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How to make an AI voiceover in Captions
Step 1
Upload any assets you want to include in the video, like images, slides, or existing footage.
Step 2
Add a script or generate a new one in Captions. Then, pick the voice you want to narrate your video.
Step 3
Auto-generate captions that match the voiceover. You can also use Captions to translate the voiceover if you want to post in multiple languages.
You don't need to be on camera to build an audience. Faceless videos give ideas a voice.
Best practices for AI voiceover videos
Check the rhythm and flow
Voiceover scripts should use short sentences, active voice and natural speech patterns. Read your script out loud to check if the pacing and rhythm sound natural. If it sounds unnatural, you'll want to adjust the script.
Match the tone to the topic
Choose your AI voice based on the emotional register of your content. For example, an educational explainer should use a measured voice, while motivational videos benefit from a more energetic delivery.
Pace deliberately
AI voices can sound rushed if the script is too dense. Leave breathing room, like letting B-roll play for a couple sentences before narration continues. Silence can be editorial.
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Frequently asked questions
How do I add AI voiceover to a video without recording my own voice?
You don't need a microphone or studio at all. Modern text-to-speech tools let you type or paste your script, choose a synthetic voice, and generate narration as an audio track you can drop onto your timeline. The AI voice carries the story while B-roll, screen recordings, stock footage, or text-on-screen handle the visuals. A good habit is to write the way people talk, with short sentences and natural pauses, since scripts written for the eye often sound stiff when read aloud.
Can I make money on YouTube without showing my face?
Yes, faceless channels are extremely popular for specific topics. Topics like finance, entertainment recaps and educational explainers can work well in this format. You combine B-roll with images or other graphics, and add a voiceover to narrate the story.
How do I make a voiceover video that doesn't sound robotic?
First, make sure you're using a platform that offers hyper-realistic voices. Voices sound robotic when the AI model isn't as powerful and can't replicate true human speech patterns.
Next, make sure you like your script. Many "robotic" results come from the script, not the voice engine. Write conversationally, with details like contractions and varied sentence length so the script sounds natural. Make sure you pick a voice that feels right for your topic and desired tone. A final pass listening with your eyes closed will reveal any spots where the rhythm feels off.
What is the best AI voiceover tool for YouTube videos?
If you're making faceless videos for YouTube, you'll want to make sure the voiceover sounds natural and performs well. Captions offers a mix of voices that cover different accents and styles, so you can pick the right voice for your content's topic and emotional tone. The platform can also add auto-captions and other edits, so it's easy to get videos done.
What is the best AI voice for video narration?
There's no single "best" voice. You should pick based on a specific video's content and your desired audience. Match the voice's accent and energy to your viewers: an upbeat delivery suits social shorts, while a calmer cadence fits long-form or educational content.
Practical things to check before committing: how the voice handles numbers, acronyms, and proper nouns; whether you can control pacing and emphasis; and how it sounds at the speed your audience actually watches (many people play content at 1.25x or 1.5x). Always preview a real paragraph of your own script rather than judging from a generic demo line.
Can I make a professional video using only AI voiceover?
Yes, and many brands do now. The voiceover is only one layer of "professional." What people actually perceive as quality is the combination of a sharp script, clean visuals, good pacing, and consistent audio levels. To make AI narration feel polished: keep background music well below the voice, add brief pauses between sections so it doesn't feel rushed, and cut visuals on the rhythm of the narration rather than at random. Caption your video too, since most social viewers watch on mute and captions also improve accessibility and watch time.