FA-11209 / Media timeline seeking / Member archive

Presentation order distinct from decode · case 04

Decoded B-frames are displayed in decode order instead of presentation order.

Member previewVariant 4 · 3 implementations · 4 checks per implementation

Case contract

Frames are [decode timestamp,presentation timestamp,payload]. Return stable presentation order, retaining input order for equal presentation timestamps.

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, 0, "I"], [1, 2, "P"], [2, 1, "B"]]`	`[[0, 0, "I"], [2, 1, "B"], [1, 2, "P"]]`	Failed

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

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