✦ TEXT TO VIDEO

AI text to video for fitness promos

Create fitness promos with AI text to video. Describe a workout scene, add an energetic voiceover or music and get a clip up to 20 seconds long in Full HD or 4K.

No subscription · Credits never expire · From $9

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.

Why fitness promos suits AI video

Gyms, trainers and fitness apps need motivating short clips. A scene of effort and a one-line voiceover can carry an offer or a challenge.

How to describe the scene

  • A single activity: running, lifting, stretching
  • Strong, contrasty light
  • A camera move that gives energy

An example you can adapt

Example sentence: A runner crossing a bridge at sunrise with breath visible in the cold air, camera tracking beside them.

Example voiceover: "Today is the day. Join our six week challenge and start moving." That script is 12 words, so the video falls in the "6–10 seconds" length and costs 2 credits in Full HD or 4 credits in 4K.

Sound and camera

  • Energetic music or a motivating voiceover
  • Vertical 9:16 for social ads
  • Full HD

Mistakes to avoid

  • Health or results claims you cannot support
  • Realistic people in medical or body-image claims

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

Use image to video with your own photo of the space.

You are responsible for claims. Follow advertising rules where you sell.

That script is 12 words, so the video falls in the "6–10 seconds" length and costs 2 credits in Full HD or 4 credits in 4K.

BetterVideo makes single clips of up to 20 seconds for both text to video and image to video, so a short message fits in one clip. A talking photo, which adds lip-sync to a photo, is 4 or 8 seconds.

Yes. Every Create video has built-in sound: music in ten AI-generated styles, or a voiceover of up to 50 words, which is up to 20 seconds. Lip-sync is available through Talking photo, which makes the face in a photo speak a script of up to about 20 words in 4 or 8 seconds.

Two: Full HD 1080p and 4K Ultra HD. Videos are created at 720p and enhanced automatically to the size you choose, and 4K costs double the Full HD price.

Keep reading

← Back to Text to Video use cases

Ready to make your video?

Pick a pack, describe your video and download it in a few minutes.

Start from an idea → See pricing

No subscription required. Credits never expire.