Warm up before you measure anything
Start with easy movement and comfortable mini-tennis or baseline hitting. Let your forehand settle before you record it. If anything hurts, stop and get qualified advice before continuing.
Keep the feed predictable
Ask a partner to feed at a manageable pace toward a similar contact area. You are not recreating every ball from a match; you are making repeated movement easier to see.
Record one focused block
Dropshot’s forehand drill targets 50 repetitions and usually takes about ten minutes. End early when you need to. A smaller set of comfortable, clearly recorded swings beats forcing tired reps.
Before starting, follow the side-on iPhone setup guide and confirm that head, feet, and racket remain visible.
Review a pattern, not one perfect clip
Look across several usable strokes. One awkward feed can distort a swing, so pay attention to what repeats instead of treating the best or worst clip as the whole session.
Choose one adjustment for the next round. Change five things at once and you will not know which one helped.
Repeat under similar conditions
Keep the camera angle, hitting area, and feed reasonably similar. Use the next recording to answer one small question: did the pattern become more consistent?
Know the limits of video feedback
A single camera cannot capture every detail, and technique guidance cannot diagnose pain or injury. Use qualified coaching and medical advice when the situation calls for it.