Filming Form and Commentary at the Same Time

A coaching clip has two jobs: show the movement and deliver the cue. Most phone-filmed coaching content does one and bolts on the other, either as a voiceover added later or as text on screen.

Both are weaker than saying it while the movement happens. A cue attached to the exact rep it describes is instruction. The same cue as narration over a silent clip is commentary.

Why 60 / 40, side by side, landscape

60 / 40 because the movement carries the information and your face carries the instruction. The demo needs to stay legible; you stay useful even at forty percent.

Side by side means a vertical split, two halves standing next to each other. Movements with horizontal travel need width, and a stacked split cuts exactly the wrong axis.

Landscape for anything that travels sideways: kettlebell swings, sled pushes, sprint mechanics, anything filmed from the side of a rack.

The exception is worth knowing. Vertical movements (squats, presses, pull-ups) should be filmed portrait with a stacked split. The bar path is the subject and it travels up and down. Turning the phone the other way is the whole adjustment.

Getting the demo half right

Frame the full range of motion, plus margin. The most common failure is a squat clip that crops the lifter at the bottom of the rep. Set up, do one full rep, and check the preview before recording anything you intend to use.

Shoot from the angle the fault shows. Knee valgus reads from the front. Hip hinge and spine position read from the side. Bar path reads from directly side-on at hip height. Pick the angle for the fault you are coaching, not the one that looks best.

Keep the phone still. Handheld coaching footage is very hard to assess. A cheap tripod is the difference between a clip a client can learn from and one they cannot.

Mind the mirror. Gym mirrors put a second copy of the movement in frame, often at a confusing angle, and they reflect your inset back into the shot. Film away from them where you can.

Getting your half right

You are talking while something physical happens next to you, which means two practical things.

Stay in frame while you demonstrate. If you are both coaching and lifting, the front camera is on you at close range and you will drift out of it the moment you move. Set the phone where you can check the preview.

Time the cue to the rep. The value of filming both at once is that “chest up” lands on the rep where the chest dropped. Say it then, not at the end.

Do not narrate constantly. Silence during the working set is fine. One cue at the right moment beats a running commentary.

Longer sessions

Coaching content tends to be short clips, which suits simultaneous capture well; the heat problem only really appears past a few minutes.

If you are filming a full session:

• 1080p is plenty. Nobody is assessing form at 4K.
• Break it into sets. One clip per set is easier to review and easier to send to a client than one long file.
• Keep the phone out of direct sun on outdoor sessions; a hot phone stops recording mid-set.

Related

• Recording both cameras at once
• Which iPhones can do it