You film the whole 45-minute class and end up using four minutes of it: the squat cue, the correction you gave twice, the finisher. shortshort reads your cueing, keeps each instruction whole, frames it vertically and captions it, so one Tuesday session becomes a fortnight of posts.
30 free credits, no cardUp to 2 GB per videoMP4 · 9:16 or 4:5
A filmed class becomes up to 20 vertical clips on the Studio plan, one per exercise, cut on your spoken cues and captioned for feeds that start without sound.
Example with shortshort: a 47-minute strength class becomes 10 shorts of about 30 seconds, for 47 credits, from the Creator plan.
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The selection reads your voice, not the beat. A clip opens where you name the exercise or set it up and closes where the cue lands, which is why 30 seconds is the right target: one movement, said in full, instead of half a rep and a fade.
Face tracking places the vertical frame on you. In 9:16 the zoom on a tracked face stays at x1.0 or x1.04, with brief push-ins on emphasized words, so the frame keeps close to the full height of the picture; in 4:5 it goes to x1.4 at most, to bring a small face to about 20% of the frame height. A wide shot of the room, or one where several people are working at once, is kept whole rather than sliced, because a vertical cut there loses the arms or the feet.
Each word lands on screen the moment you say it. Impact prints one bold word per line, which is what a viewer copying you on a mat can read in the half second they look up, with the phone across the room and the sound off.
The bill follows the length of the class, not the number of shorts: 47 credits for a 47-minute session whether you ask for 3 or for the 20 allowed on the Studio plan. Starter, 12 EUR a month for 480 credits, covers ten classes, Creator, 29 EUR for 1,600, covers thirty-four, and the 30 welcome credits cover a first class of up to 30 minutes.
Five steps. About two minutes of your time; the processing itself runs on our servers and depends on the length of the video.
Suggested captions: Impact. A form cue is read at a glance, between reps, from a phone propped up two metres away. Big solid words hold at that distance, and over a body that keeps moving behind them.
Upload the class recording as filmed, up to 2 GB in MP4, MOV or WebM. Choose how many shorts you want, from 1 to 20, and a target length between 15 and 90 seconds. shortshort transcribes your cueing, keeps passages that form complete instructions, crops to 9:16 on you and captions every word. A 47-minute class costs 47 credits, one per minute of source, and the 30 credits given at signup cover a class of up to 30 minutes.
Yes. The clips are chosen from what is said, so your cueing is the raw material: the setup, the correction, the count, the reason a movement is done that way. A class filmed with music and no voice gives the selection nothing to cut on and nothing to caption. Coaches who narrate their reps get the most usable clips.
The 9:16 frame is placed on the face on screen. In 9:16, the zoom on a tracked face stays at x1.0 or x1.04 for each shot, with gentle push-ins up to about x1.11 on emphasized words, and x1.6 is reached only on a passage that is not tracked. In 4:5, the shot zoom brings a small face to about 20% of the frame height, at most x1.4, and push-ins top out near x1.5, under the x1.6 ceiling of every format. A wide shot that holds several people is kept whole with space above and below rather than cropped. Framing is automatic, so a movement that needs the full body reads best when the source shot is wide enough to be kept whole.
By default an exported short is published to the shortshort community gallery. Every paid plan, Starter at €12 a month, Creator at €29 and the Studio plan at €79, lets you keep your videos out of it, for exports already made and for the ones to come. Filming the people in your class still needs their agreement, which is your call and not the tool's.
From 1 clip to the 20 allowed per video on the Studio plan, each aimed at 15 to 90 seconds, and the AI may run up to 25% over or under that target to finish the instruction instead of clipping it mid-sentence. Your plan sets the ceiling: 3 clips per video on the free tier, with a watermark on the export, then 5 on Starter, 10 on Creator and 20 on the Studio plan. Each clip is an MP4, 1080 x 1920 in 9:16 or 1080 x 1350 in 4:5 for the Instagram feed.
Free to try with 30 credits and up to 3 shorts per video. Your upload stays private until you export; exported shorts join the community with their source video by default, and any paid plan can keep them out.