Description
Require nonnegative integer characterCount and positive durationSeconds and divide for charactersPerSecond.
Caption timing compares text with a speech clock, while reading rate divides a supplied character count by display duration. Neither measurement alone establishes accessibility or comprehension.
Require nonnegative integer characterCount and positive durationSeconds and divide for charactersPerSecond.
When to use this tool
Use Caption Character Rate Cue when you need a caption lag or reading-rate term.
How to use the tool and how it works
- Enter characterCount, durationSeconds. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read charactersPerSecond. Use the output convention below.
Require nonnegative integer characterCount and positive durationSeconds and divide for charactersPerSecond.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| characterCount | Character Count | Required. Safe integer; minimum 0. |
| durationSeconds | Duration Seconds | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| charactersPerSecond | Characters Per Second | Required. Finite number. |
{
"input": {
"characterCount": 42,
"durationSeconds": 3
},
"output": {
"charactersPerSecond": 14
}
}Limitations and assumptions
- The character-count convention is supplied; text is not analyzed and no language-specific readability or accessibility threshold is applied.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Review captions in context using the applicable accessibility and language-specific quality criteria.
References
Similar or alternative tools
- Headline Character Budget
Count headline by Unicode code points.
- Broadcast Slate Timing Segment
Subtract indices for durationFrames and divide by frame rate for durationSeconds.