How to share slo-mo clips with athletes

TL;DR. The fastest way to share videos with your athletes: capture → trim → slow down → share peer-to-peer. Under 2 minutes from clip to athlete's phone, zero cloud upload. Works for gymnastics, BJJ, tennis, padel, dance, music, anything with a sub-90-second skill. The whole point: the athlete sees the clip while the kinaesthetic memory is still warm, and the footage never leaves the two phones.

The 6-step workflow

01. Mount & start the rolling buffer

Mount the phone for your sport, tripod behind baseline, mat-edge clamp, vault-runway tripod. Open ReplayR, set buffer to 45 s (single skills) or 90 s (routines / sparring rounds). Hit start. The phone now continuously records to a 45 s rolling memory.
02. Save the moment

When the rep happens, the throw, the rally, the dismount, the submission, tap save on your Wear OS watch (Tile or Complication) or on the on-screen button. The last 45 s is written from buffer to disk. Recording resumes in ~1 s.
03. Trim to the 4 seconds that matter

Open the saved clip in ReplayR's library. Drag the in/out handles to isolate the entry → execution → landing window. Save the trim, the full 45 s clip is still kept too in case you want a longer review later.
04. Slow it down

Apply 0.5× or 0.25× slow-motion. 0.5× for footwork, balance, tempo. 0.25× for fast technical details, bat speed, golf impact, submission grip switches, judo entry angle. Export as MP4 (1080p) to your gallery.
05. Mute it if the audio is a liability (Pro)

Clips keep the camera-mic audio. On the Edit Clip screen, switch the Audio row to muted: the preview goes silent as you tap it, and the audio track is stripped from the file when you confirm. Worth a second before anything filmed courtside leaves the phone, sideline chatter, other people’s children called by name, a blunt correction, or music over the speakers. Muting is permanent for that clip.
06. Share, peer-to-peer, no cloud

Android → Android: Quick Share / Nearby Share. Tap target phone, athlete accepts, done. No internet required.
iPhone in mix: AirDrop direct, or share via WhatsApp / Signal direct message.
Remote athlete: WhatsApp / Signal / Telegram (E2E-encrypted), 1-to-1 message, no public link.
Avoid: uploading to YouTube unlisted (still on Google's servers), TikTok drafts (analyzed for content), or public Drive links (link-shareable forever).

Why does peer-to-peer sharing matter?

Minors

Under-18 footage in any cloud bucket is a parental-consent and GDPR conversation you don't want to have. Direct device-to-device sidesteps it.

Competitive secrecy

Pre-fight game plans, new BJJ guard concepts, unlisted gymnastics elements, you do not want a cloud breach to publish your edge.

Speed

Quick Share between two on-network phones is faster than waiting for an upload bar. Mat-side review happens in the moment.

Tips per sport

Tennis / padel: 0.5× on the contact frame, 0.25× on serve toss release.
Gymnastics: 0.25× for vault block, beam dismount rotation, bar release timing.
BJJ: 0.5× on the position switch, 0.25× on the grip break at the finish.
Boxing / Muay Thai: 0.25× on the combination, freeze-frame on the back foot at impact.
Dance / music: 0.5× full body / hands, side-by-side with reference (record both).

FAQ

Can I share without uploading to YouTube or a cloud?

Yes, Quick Share / AirDrop for peer-to-peer, WhatsApp / Signal for private 1-to-1. ReplayR never uploads.

What's the best slow-motion speed?

0.5× for tempo and balance. 0.25× for fast technical details. Below 0.25× becomes choppy unless source is high-frame-rate.

How big are exported files?

A trimmed 6 s 1080p slo-mo is typically 10–25 MB. Full 45 s clips 70–150 MB.

Can I remove the sound before I send a clip?

Yes. Clips carry the camera microphone audio by default. Open the clip, tap Edit, and switch the Audio row to muted (Pro). The audio track is stripped from the file when you confirm, so the MP4 you share has no sound at all rather than sound at zero volume. Do this whenever the clip contains other people’s children by name, parents’ commentary, blunt in-the-moment coaching, or licensed music over the facility speakers, which can also get a clip blocked on public platforms. Muting is permanent for that clip, so keep a copy first if the audio matters. More in the ReplayR FAQ.

Can I add voice-over coaching?

Not in-app yet (planned). Workaround: send a WhatsApp voice note alongside.

Will Quick Share work without Wi-Fi?

Yes, Quick Share uses Bluetooth + direct Wi-Fi (peer-to-peer), no internet required. Same for AirDrop.