Frame Rate
Also known as: fps, frames per second
Frame rate (frames per second, fps) is how many individual images your camera captures each second — higher frame rates freeze fast motion better and produce more reliable pose tracking.
Swing analysis depends on tracking joint positions across time. At 30 fps a standard slow swing may be readable, but a baseball swing or a fast-pitch delivery can blur critical positions between frames. Most modern phones can record at 60 or 120 fps in slow-motion mode. SwingVantage recommends at least 60 fps for accurate analysis and will note lower frame rates as a quality limitation when they affect confidence. Frame rate is one of the factors the Video Quality Score evaluates automatically.
Example
A baseball swing recorded at 30 fps misses the contact point between frames; the same swing at 120 fps captures it clearly for exact analysis.
Frequently asked questions
What frame rate should I use?
Aim for 60 fps minimum. For fast swings (baseball, softball, cricket), 120 fps or higher is strongly preferred.
Related terms
- Video Quality ScoreA Video Quality Score is a pre-analysis rating (0–100) that tells you how usable a submitted clip is before pose estimation begins — catching bad angles, motion blur, or poor lighting early.
- Pose EstimationPose estimation is the computer-vision process that detects the positions of major body joints (keypoints) in each video frame, producing the skeleton that SwingVantage uses to measure angles and movement patterns.
- Phone Video LimitationsPhone video limitations are the practical constraints of recording on a smartphone — lens distortion, stabilization artifacts, variable frame rate, and compressed color depth — that can reduce analysis accuracy relative to purpose-built cameras.
- Mobile Motion CaptureMobile motion capture is the process of using a smartphone camera and on-device pose estimation to track body movement in real time or from a recorded clip — no specialized hardware required.
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