A WAV's markers were never read, so its audio layer showed none. The importer
now reads the file's cue points (`cue ` chunk named by `LIST/adtl` `labl` and
`note`, sized by `ltxt`) and Adobe's XMP markers (`_PMX` chunk, `xmpDM:markers`
entries as elements or attributes, in frames of the track's `xmpDM:frameRate`).
A marker present in both encodings is listed once. The reader is bounds-checked
and caps the marker count and XMP size.
- `Footage.markers` (optional in the file format) holds them at footage time; a
layer made from the footage starts with them.
- Layer ▸ Markers ▸ Update Markers From Source also works on footage layers.
- Markers from a file have no label colour.
Tests: reader unit tests (cue, note, ltxt, both XMP forms, both encodings,
truncated and hostile files), a probe test, and an end-to-end test through the
fully wired session. Not checked against a WAV written by Adobe's tools.
Claude-Session: https://claude.ai/code/session_013fTnVxnXTv2MBW6uj2PPyU
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude
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