FA-78238 / Subtitle cue timing / Member archive

Karaoke syllable timing: late syllable test · case 03

A zero-length syllable appears exactly at the cue end.

Member previewVariant 3 · 3 implementations · 9 checks per implementation

Case contract

Karaoke text is a sequence of {\k|\K|\kf|\ko<cs>}syllable with durations in centiseconds. Syllable i starts at cue start plus the sum of all previous durations (empty syllables still consume time). Syllables starting at or after the cue end are dropped; others are clipped to the cue end. Output [syllable,start_ms,end_ms].

Why this case matters

Subtitle timing defects shift, hide or overlap captions that viewers depend on for comprehension and accessibility.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
regression: late syllable test	`[["Hel", 1000, 1000], [" ", 1000, 1100], ["o ", 1100, 1100]]`	`[["Hel", 1000, 1000], [" ", 1000, 1100]]`	Failed

MEMBER ARCHIVE

The complete case is available to members.

This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

Member access is invitation-based. Sign in with your invited account to inspect the sources.