Keep the complete movement inside the frame
Include the athlete from head to feet and leave room for equipment travel. For overhead movements, preserve space above the hands. For burpees, include both the standing finish and full floor position.
Place the phone on a stable support. Do not ask another person to follow the athlete by hand unless the movement itself travels and the tracking setup is designed for it.
Use the angle that matches the question
Side and oblique views are generally useful for depth, torso angle, hip hinge and bar path. Front and back views can better expose visible left-right symmetry and knee alignment.
No single camera view provides perfect evidence for every criterion. ScoreRep rubrics declare which views support specific observations.
Reduce occlusion and contrast problems
Use even lighting and avoid placing the athlete directly in front of a bright window. Clothing should remain visually distinct from the background where possible.
Keep other athletes, racks and loose equipment from repeatedly crossing the body outline.
Make repeat recordings comparable
Mark the phone position or use the same tripod location for repeated tests. Similar framing is essential when using history to judge whether the movement changed.