FA-78063 / Subtitle cue timing / Member archive

Overlapping cue row stacking: new row index · case 03

Newly opened rows get the index of the last cue slot rather than the new row.

Member previewVariant 3 · 3 implementations · 8 checks per implementation

Case contract

Assign overlapping cues to display rows. Cues are processed by (start, input index); a row is free at time t when the last cue placed there ended at or before t (end exclusive). Each cue takes the lowest free row, or opens a new row. Return the row of each cue in input order.

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: new row index	`[2, 2, 1]`	`[0, 1, 1]`	Failed

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