Use case
AI video for fitness coaches
Cut one hour of your own filmed workout or live class into vertical Shorts for 60 credits with Long to Shorts ($18.00 on the entry pack), then add AI-made hooks and B-roll from 3 credits a clip. Your filmed coaching stays the content; AI fills the gaps around it. Don't use generated footage to teach an exercise: video models still get joint angles, grip and rep counts wrong.
From 3 credits a clip. Credits never expire, and failed generations are refunded automatically.
The long version, with sources and every check: Turn a Long Video or Podcast Into Shorts With AI
The workflow, step by step
Every step names the Viralance tool it runs on.
- 1
Start from footage you already have
Upload a recorded class, Q&A or coaching call (1 to 30 minutes) to Long to Shorts. It picks 3, 5 or 8 moments, crops them to vertical and burns in captions. It costs 1 credit per started minute of the source, so a 45-minute class is 45 credits.
- 2
Make a 4-second hook for each Short
Generate a cold open in the studio: a chalked hand gripping a bar, a timer hitting zero, sneakers on a wet track at 6 a.m. VEO 3.1 Lite does it with sound for 3 credits. Keep people small or out of frame so the model has no body mechanics to get wrong.
- 3
Add B-roll for program promos
For a sales post about your 8-week plan, generate mood shots (meal prep on a counter, a gym at dawn, a water bottle being filled) with Hailuo 2.3 at 4 credits for 6 seconds. Join them with your own clips in any editor; Viralance makes clips, not timelines.
- 4
Voice and captions
Record your own voice if you can. If not, the AI voiceover reads a 600-character script for 2 credits, and Subtitles burns in captions for 3 credits per video, which matters because most people watch Shorts muted.
- 5
Check before posting
Watch every generated frame at full size. Delete any clip with an extra finger, a knee bending the wrong way, a barbell passing through a body or weights that change size. Those mistakes are what a fitness audience notices first.
Models that suit this job
Credits per clip from the live price list. Dollar figures use the $9 Mini pack and the $299 Business pack.
| Model | Setting | Credits | Mini / Business | Why this one | Try |
|---|---|---|---|---|---|
| VEO 3.1 Lite | Text · 4s · 720p | 3 | $0.90 / $0.54 | Cheapest clip with native sound. Good for hooks: a bell, a whistle, a crowd. | Try it |
| Hailuo 2.3 | Text · 6s · 720p | 4 | $1.20 / $0.72 | Strong physics for objects (water, chalk dust, a rolling plate). No audio track. | Try it |
| Kling 3.0 Standard | Photo · 5s | 8 | $2.40 / $1.45 | Animates a photo of your gym or your product with steady camera moves at 1080p. | Try it |
| Seedance 2.0 | Text · 5s · 720p | 12 | $3.60 / $2.17 | Creator-style talking clips with sound, for supplement or apparel promos (AI person, so disclose it). | Try it |
VEO 3.1 Lite
3 creditsText · 4s · 720p · $0.90 / $0.54
Cheapest clip with native sound. Good for hooks: a bell, a whistle, a crowd.
Try VEO 3.1 LiteHailuo 2.3
4 creditsText · 6s · 720p · $1.20 / $0.72
Strong physics for objects (water, chalk dust, a rolling plate). No audio track.
Try Hailuo 2.3Kling 3.0 Standard
8 creditsPhoto · 5s · $2.40 / $1.45
Animates a photo of your gym or your product with steady camera moves at 1080p.
Try Kling 3.0 StandardSeedance 2.0
12 creditsText · 5s · 720p · $3.60 / $2.17
Creator-style talking clips with sound, for supplement or apparel promos (AI person, so disclose it).
Try Seedance 2.0
A weekly batch: one hour of class footage into Shorts (60), three 4-second hooks (9), one voiceover (2) and one subtitle pass (3) comes to 74 credits, about $22.20 on the entry pack. Generated clips are charged per clip, and failed generations are refunded automatically.
One-click templates for this
Upload one photo, no prompt needed. The price is the full cost with default settings.
Where AI video fails coaches
Video models predict what movement looks like; they do not know biomechanics. In a generated squat the knees may cave, the bar can float off the back, and a "set of ten" may end after seven reps or loop into twelve. A client who copies that form can get hurt, and a coach whose content shows it loses credibility.
So the rule is simple: anything that teaches a movement is filmed with a real person doing it correctly, ideally you. AI is for the frames around the teaching.
- Good fits: hooks, transitions, mood B-roll, product shots, program announcements, seasonal promos.
- Poor fits: exercise demos, technique breakdowns, rep counts, "results" footage.
- Never: before-and-after bodies. A generated transformation is a made-up result, and platforms and advertising rules treat results claims strictly.
AI presenters for a coaching business
AI Actors turns a written script into a lip-synced presenter video (about 2 credits per second of finished video on the Standard tier). It can explain an offer or answer FAQs about your program. It is not you, so don't present it as you or as a client: say it is an AI presenter in the caption.
Most coaches get better results from a phone video of themselves. Use an AI presenter when you need a version in another language or a quick FAQ clip, not as your face.
Prompts to start from
Copy one, or open it in the studio with the model already selected.
Close-up of a chalked hand gripping a steel pull-up bar in a dim garage gym, chalk dust drifting in a shaft of morning light, slow push-in, quiet breathing and a creak of the bar
Hook with no full body in frame.
Use this promptOverhead shot of meal prep containers being filled on a wooden counter: rice, grilled chicken, broccoli, hands placing lids, bright daylight, steady camera
B-roll for a nutrition plan promo.
Use this promptA digital interval timer on a gym wall counts down to zero and flashes red, slight camera shake, empty gym in the background, beep at zero
Works as a challenge-post opener.
Use this promptQuestions about this
Can AI generate exercise demonstration videos?
It can generate footage that looks like exercise, but the form is often wrong: joints bend unnaturally, equipment clips through bodies and rep counts drift. Film demonstrations with a real person and use AI only for hooks, B-roll and promos.
How do I turn a long workout video into Shorts?
Upload it to Long to Shorts in the Viralance dashboard. Sources from 1 to 30 minutes are cut into 3, 5 or 8 vertical clips with captions, for 1 credit per started minute of the source (minimum 3).
Is it okay to use an AI avatar as my coaching persona?
Only with clear disclosure. Clients buy coaching from a person; an undisclosed AI presenter misleads them. Use AI presenters for translated versions or FAQ clips and label them.
Can I make before-and-after transformation videos with AI?
No. A generated body transformation is an invented result. It misleads buyers and runs against platform and advertising rules on results claims. Use real client results with written permission instead.
Which model is cheapest for gym B-roll?
VEO 3.1 Lite at 720p: 3 credits for 4 seconds with sound. Hailuo 2.3 is 4 credits for 6 seconds without sound and handles object physics well.