Draw on a video frame

TL;DR. ReplayR Pro lets you mark up a frame without exporting to a second app. Pause on the moment that matters in the analyzer and tap Annotate frame: draw freehand to trace a swing path or highlight footwork, drop a straight line to check alignment, and add short labels right where they belong. Four colours, three sizes, undo and clear-all. Saving or sharing gives you one image with the markings baked in at the clip’s full recording quality, and closing the drawing screen puts you back on the exact same frame. All on-device, part of the one-time Pro unlock.

The four-step version

01. Step to the frame

Open a saved clip, tap Analyze, and step to the instant you want to talk about: the top of the backswing, the foot plant, the moment of contact. The frame-by-frame analyzer covers how to get there quickly.
02. Tap Annotate frame

The drawing screen opens on that still. Three tools: freehand for paths and shapes, a straight line for anything you are checking against an axis, and text for a two-word label. Four colours and three stroke sizes, so a thin line against a busy background stays readable and a thick one reads from across a room.
03. Mark only what you will talk about

One or two marks per frame. A picture with six arrows on it communicates nothing, and an athlete reading it on a phone between drills has about five seconds of attention. Undo removes your last mark, clear-all starts the frame over, and neither touches the original clip.
04. Save it or send it

The export is a single flattened image at the clip’s full recording quality, with the drawing part of the picture rather than a separate layer. Send it through the usual Android share sheet, WhatsApp, Signal, team chat, email, and it looks identical wherever it lands. Then close the drawing screen and you are back on the same frame, ready for the next one.

What to draw, by sport

Golf and tennis

A straight line down the shaft or racquet at address, then the same line at impact on a second frame. Two images say more about an early extension or a dropped elbow than a minute of talking. See for golf instructors.

Weightlifting

A vertical line through mid-foot at the start position, freehand for the actual bar path. The gap between the two is the coaching point. See form check.

Cricket and racquet line calls

A straight line along the crease or the sideline on the contact frame, with a one-word label. It ends the argument without anyone raising a voice. See for cricket coaches.

Gymnastics and dance

Freehand along the line of the body at the shape you are judging, plus a label naming the deduction. See for gymnastics coaches.

Team sports

Freehand circles on the two players who were out of position, a line for the pass that was available. One frame from the phase, not the whole phase. See for youth soccer coaches.

Swimming and track

A horizontal line at the water line or a vertical at the block, then the same frame from next week’s session for comparison. See for swim and track coaches.

A still, not a telestrated clip

Worth being precise about the boundary. ReplayR draws on a frame. The output is an image, and the drawing does not follow a player across a moving video the way broadcast telestration does. If you need marks that track motion, a split screen comparing two athletes, or a voice-over recorded onto the clip, that is still a dedicated analysis app’s job, and saved ReplayR clips are ordinary MP4 files so handing one over is trivial.

In practice, most of the feedback coaches send is a frame anyway. A still with one line on it survives being forwarded, opens instantly on any phone, costs a few hundred kilobytes instead of thirty megabytes, and does not require the athlete to install anything. That is the case this feature is built for.

Full comparison: ReplayR vs OnForm · vs Coach’s Eye / Hudl Technique.

FAQ

Can I draw on a video in ReplayR?

You draw on a frame, not on the moving clip. Pause on the frame that matters in the analyzer, tap Annotate frame, and draw freehand, add straight lines and add short text labels. The result is a single still image. Telestration that tracks across a moving video is still a job for a dedicated analysis app.

What drawing tools are there?

Freehand for swing paths and footwork, a straight-line tool for alignment checks, and short text labels placed where they belong. Four colours and three stroke sizes, with undo and clear-all while you work.

Does the drawing stay on the image when I share it?

Yes. Saving or sharing an annotated frame produces one image with the markings baked in, at the clip’s full recording quality. There are no layers to combine afterwards and it looks the same in any app you send it to.

Do I lose my place in the clip after drawing?

No. Returning from the drawing screen puts you on the exact same frame in the analyzer, so you can step forward and mark up the next one without hunting for your position again.

Does annotating change the original clip?

No. The clip in your library is untouched. Annotation produces a new image; undo and clear-all only affect that image while you are drawing it.

Is annotation free?

No, drawing on a frame is part of the Pro unlock, a one-time purchase rather than a subscription. It arrived in August 2026 alongside the frame-by-frame analyzer.