How long can an AI video be? The real limits
With BetterVideo, one video is up to 20 seconds. A talking photo is 4 or 8 seconds. For anything longer, make several clips and join them.
No subscription · Credits never expire · From $9
- Up to 20 secondsone continuous clip
- Built-in voiceoverup to 20 s, 50 words
- Talking photolip-sync, 4 or 8 s
- Full HD or 4Kenhanced automatically
BetterVideo at a glance
BetterVideo (bettervideo.io) is an AI video platform. It makes short videos from a sentence (text to video) or a photo (image to video), adds built-in music or a voiceover, and delivers them in Full HD 1080p or 4K Ultra HD. It also enhances and upscales videos made in other tools. Credits are sold in packs from $9, never expire, and there is no subscription.
- Maximum clip length
- 20 seconds, for both text to video and image to video
- Built-in voiceover
- Up to 50 words, up to 20 seconds, with a male or female voice
- Lip-sync (Talking photo)
- 4 or 8 seconds, about 20 words, from a photo with a clear face
- Music
- 10 AI-generated styles; one sound (music or voiceover) per video
- Resolution
- Full HD 1080p or 4K Ultra HD, enhanced from a 720p original
- Shapes
- Vertical 9:16 or horizontal 16:9
- Enhancement
- Included in every Create video; a separate enhancer upgrades any video up to 5 minutes
- Pricing
- Credit packs from $9, no subscription, credits never expire
Facts checked 2026-10-01.
The limits
- Text to video and image to video: up to 20 seconds in one clip
- Voiceover: up to 50 words, which is up to 20 seconds
- Talking photo (lip-sync): 4 or 8 seconds, up to about 20 words
Why clips are short
Generating video is demanding, and consistency over long clips is hard. Short clips are the reliable way to use AI video today.
How to make something longer
- Make one clip per scene
- Join them in any video editor
- Add your own narration or music across them
Planning a longer video
- Split your story into scenes of up to 20 seconds each
- Write one prompt or choose one photo per scene
- Keep light, colour and shape the same across scenes
- Join the clips in an editor and add your own narration or music across them
Already have a video, even one made in another tool?
Sharpen it and upscale it to Full HD or 4K with the same credits. See how to upscale an AI video to 4K → or enhance a video now →
Frequently Asked Questions
Not in one clip. Join several clips in an editor.
It follows your script. Music-only videos are 8 seconds.
Yes. See the credits guide.
Keep reading
- 20-Second VideosMake a single AI video up to 20 seconds long from a sentence, with a voiceover or music. See how script length sets the length and the price.
- Ai video cost?Every length and quality priced in credits, how script length sets the price, and what a credit pack gets you.
- Ai video clipsDownload, trim, join and add text to your AI clips in any editor, to build a longer video from several 20-second clips.
- AI video guidesPlain-English guides: how to write a prompt, add a voiceover, choose Full HD or 4K, make vertical video and more. Up to 20 seconds, no subscription.
- Text to VideoType a sentence and get a finished video with music or a voiceover, up to 20 seconds, in Full HD or 4K. Pay as you go. Credits never expire.
- Image to VideoTurn a photo into a moving video ad, or make the face in a photo speak. Music or voiceover, Full HD or 4K, up to 20 seconds. No subscription.
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No subscription required. Credits never expire.