Video Quality Gate
The Video Quality Gate is the automatic pre-analysis check that evaluates a submitted clip's usability and blocks or warns before processing video that is too low-quality to produce reliable analysis.
The gate runs on-device before any upload or analysis begins. It checks frame rate, lighting, subject visibility, camera angle suitability, and clip length. If the gate determines the video is likely to produce a very low-confidence result. It explains the specific problem in plain English and suggests a fix — rather than letting the analysis run and returning an unhelpfully vague result. The gate is an honesty mechanism: it sets a minimum quality bar and communicates it clearly.
Run the quality gate pre-check in the app before starting your practice session to confirm your recording setup is correct. This saves you from completing a full session only to find the video is unusable for analysis.
Use the quality gate score as a session setup checklist: frame rate, lighting, angle, and clip length each contribute to the score. Target a score above 80 before starting your practice session to maximize analysis reliability.
Example
A video recorded at 24 fps in dim indoor light triggers the quality gate with: 'Low frame rate and poor lighting detected — switch to 60 fps and move to a brighter location for reliable analysis.'
Why it matters
Processing a bad video wastes time and can produce confident-looking but meaningless results. The gate catches it early.
How it shows up on video
If the quality gate triggers, follow its specific plain-English suggestion before re-recording. The most common triggers are dim lighting (fix: move outdoors), low frame rate (fix: enable 60fps in camera settings), and poor camera angle (fix: move to the recommended position perpendicular to the swing plane).
Common mistakes
- Ignoring quality gate warnings and submitting anyway — a video that barely passes the gate often produces analysis with tracking failures at the most critical frames.
- Assuming passing the gate guarantees perfect analysis. The gate is a minimum quality bar. A video that passes with a score of 62 will produce significantly less reliable results than one scoring 91.
- Not using the quality gate pre-check feature before a practice session — checking setup at the start of a session (not after recording) prevents wasting the session on unusable footage.
- Recording in a location where the gate passes for the first clip but lighting changes during the session (e.g.. This moves clouds) — verify conditions are stable, not just good for the first check.
In SwingVantage Motion Lab
The quality gate runs before Motion Lab receives the video — it is a filter at the input side of the pipeline. A video that clears the gate will still show quality warnings in Motion Lab for specific frames that degraded mid-clip. Passing the gate does not guarantee consistent tracking throughout the entire video.
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.
- Camera Angle QualityCamera angle quality describes how well the recording position allows the system to see the relevant joints and movement plane — the single biggest controllable factor in analysis accuracy.
- Frame RateFrame 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.
- Lighting ConditionsLighting conditions describe how evenly and brightly the subject is illuminated — poor lighting is one of the top causes of low-quality video and degraded pose estimation.
- Phone Video LimitationsPhone video limitations are the practical constraints of recording on a smartphone. They can reduce analysis accuracy compared with purpose-built cameras.
Put this into your swing
SwingVantage can spot this in your own swing — free to start.