Break Shot Ball Speed Estimate
Estimate actual video-window mean pool-break ball travel speed, not instantaneous cue-impact speed, frame interpolation or experimental striking instructions.
Description
Video travel windows estimate mean ball speed.
Video travel windows estimate mean ball speed. Frame count describes the observation interval rather than impact timing.1
The returned values include Observed mean ball speeds meters second. The How section below explains the calculation, input rules and interpretation.
When to use Break Shot Ball Speed Estimate
Use Break Shot Ball Speed Estimate when you need to evaluate the supplied records under the calculation and evidence rules below. No instantaneous cue-impact speed, frame interpolation or striking instructions are supplied.
Prepare the observed race, match or training records and the stated units. Supply independently verified rule editions, calibration tables and targets where requested.
How to use Break Shot Ball Speed Estimate and understand its results
- Prepare the observed race, match or training records and the stated units. Supply independently verified rule editions, calibration tables and targets where requested.
- Enter observedBallTravelDistancesMeters, observedTravelVideoFrames, callerVideoFramesPerSecond using the field table and calculation rules, then run the tool.
- Read observedMeanBallSpeedsMetersSecond. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| observedBallTravelDistancesMeters | Observed ball travel distances meters | list of number | Required |
| observedTravelVideoFrames | Observed travel video frames | list of number | Required |
| callerVideoFramesPerSecond | Caller video frames per second | number | Required |
Enter aligned nonempty nonnegative distances/integer frame counts 1–1000000 and positive frame rate. Return mean speeds in m/s.
speed=distance×framesPerSecond/frameCount Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| observedMeanBallSpeedsMetersSecond | Observed mean ball speeds meters second | list of number |
{
"input": {
"observedBallTravelDistancesMeters": [
1,
2
],
"observedTravelVideoFrames": [
10,
20
],
"callerVideoFramesPerSecond": 240
},
"output": {
"observedMeanBallSpeedsMetersSecond": [
24,
24
]
}
}Limitations and assumptions
No instantaneous cue-impact speed, frame interpolation or striking instructions are supplied.
Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Match Distance Covered km Calculator: Tracked match distance should preserve missing segment evidence. Unknown segments are excluded rather than extrapolated. For a complementary task, use Rowing Stroke Rate to Pace Checker: Stroke rate and distance per stroke jointly determine observed rowing speed. Stroke efficiency need not remain constant.
References
-
Break Shot Ball Speed Estimate — tool.io
Similar or alternative tools
- Match Distance Covered km Calculator
Tracked match distance should preserve missing segment evidence. Unknown segments are excluded rather than extrapolated.
- Rowing Stroke Rate to Pace Checker
Stroke rate and distance per stroke jointly determine observed rowing speed. Stroke efficiency need not remain constant.