Video Quality Score
Also known as: VQS, clip quality score
A Video Quality Score is a pre-analysis rating (0–100) that tells you how usable a submitted clip is before pose estimation begins. This means catching bad angles, motion blur, or poor lighting early.
Before committing to a full analysis, SwingVantage runs a fast, device-side quality check on your video. It judges frame rate, lighting, camera angle, whether the full body is in frame, and whether motion blur is acceptable. A score below a threshold triggers a plain-English warning explaining what to fix. As a result, you are not waiting for analysis only to get a low-confidence result. Passing the gate is an honest prerequisite: the score tells you the clip is worth analyzing, not that the analysis will be perfect.
Check your score before worrying about your swing. A score below 60 means the video itself needs fixing first — lighting and angle are the two easiest wins.
Target a consistent score above 80 across sessions so that session-to-session metric deltas reflect real swing changes rather than video quality fluctuations.
Example
A clip recorded against bright window light scores 38/100 — the gate flags "backlit subject" and suggests moving outdoors or repositioning.
Why it matters
Garbage-in, garbage-out is the most common source of bad AI analysis. The quality gate catches the problem upfront instead of letting it silently degrade your report.
How it shows up on video
Look for the pre-analysis banner before upload completes. This means a score below 60 triggers a plain-English warning with a specific fix (e.g., 'Move to better light').
Common mistakes
- Assuming a high score means the analysis will be accurate. This means quality is necessary but not sufficient. Pose estimation can still struggle with unusual body shapes or clothing.
- Ignoring the score and submitting anyway — low-quality clips produce confident-looking but unreliable numbers.
- Blaming the score on the app when the real cause is backlighting or a wrong angle.
- Not re-recording after a warning — most quality issues are fixable in under a minute.
In SwingVantage Motion Lab
Motion Lab displays the Video Quality Score prominently before rendering the 3D avatar. This means a low score means the skeleton may drift or lose joints mid-swing. This reduces the reliability of angle overlays.
Frequently asked questions
Does a low Video Quality Score mean my swing is bad?
No — it means the video itself is hard to analyze. Your swing may be fine; the clip just needs better conditions.
Can I still get an analysis with a low score?
You can try, but SwingVantage will warn you that confidence will be lower than usual and label any estimates accordingly.
Related terms
- Camera Angle QualityCamera angle quality describes how well the recording position allows the system to see the relevant joints and movement plane. This means the single biggest controllable factor in analysis accuracy.
- Lighting ConditionsLighting conditions describe how evenly and brightly the subject is illuminated. This means poor lighting is one of the top causes of low-quality video and degraded pose estimation.
- Video Quality GateThe 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.
- Pose EstimationPose estimation is the computer-vision process that detects the positions of major body joints (keypoints) in each video frame. This produces the skeleton that SwingVantage uses to measure angles and movement patterns.
- Frame RateFrame rate (frames per second, fps) is how many individual images your camera captures each second. This means higher frame rates freeze fast motion better and produce more reliable pose tracking.
Put this into your swing
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