FA-11248 / Media timeline seeking / Member archive

Edit list empty span advances movie · case 03

Empty edit-list spans do not advance the movie clock and shift later media earlier.

Member previewVariant 3 · 3 implementations · 4 checks per implementation

Case contract

Edits are [nonnegative movie duration,media start or None for an empty edit]. Annotate each edit with cumulative movie start; empty edits still occupy movie time.

Why this case matters

A deterministic local media controller stage; metadata and downloaded data are supplied explicitly. No external player, service or codec is required.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
fixture 1	`[[0, 2, null], [0, 3, 10]]`	`[[0, 2, null], [2, 3, 10]]`	Failed

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

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