fix: normalize track array order on save (#21)#22
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Tracks were appended to draft.tracks in command-call order. CapCut lays out the timeline from the tracks-array order, not from per-segment render_index, so adding content in an arbitrary order produced a scrambled timeline on import. Sort tracks into the canonical bottom->top layer order (video, audio, sticker, effect, filter, text) in saveDraft, with a stable tiebreak so same-type tracks keep their authored order. Order derived from a real CapCut-authored draft ([video, audio, text]). Adds test/track-order.test.mjs. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Fixes #21.
Problem
Tracks are appended to
draft.tracksin command-call order. CapCut lays out the timeline from the tracks-array order, not from per-segmentrender_index, so building a draft by adding content in an arbitrary order produced a scrambled timeline on import.Fix
saveDraftnow normalizes the tracks array into the canonical bottom→top layer order before writing:video → audio → sticker → effect → filter → textOrder derived from a real CapCut-authored draft (
[video, audio, text]). Sort is stable, so multiple tracks of the same type keep their authored order, and unknown types are kept after the known ones.Verification
test/track-order.test.mjs(canonical order, real-draft order, stability, unknown types).[text, audio, video], ran a real CLI edit → output[video, audio, …, text].🤖 Generated with Claude Code