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Backend (Rust/Actix-web): - Add video_preview_clips table and PreviewDao for tracking preview generation - Add ffmpeg preview clip generator: 10 equally-spaced 1s segments at 480p with CUDA NVENC auto-detection - Add PreviewClipGenerator actor with semaphore-limited concurrent processing - Add GET /video/preview and POST /video/preview/status endpoints - Extend file watcher to detect and queue previews for new videos - Use relative paths consistently for DB storage (matching EXIF convention) Frontend (React Native/Expo): - Add VideoWall grid view with 2-3 column layout of looping preview clips - Add VideoWallItem component with ActiveVideoPlayer sub-component for lifecycle management - Add useVideoWall hook for batch status polling with 5s refresh - Add navigation button in grid header (visible when videos exist) - Use TextureView surface type to fix Android z-ordering issues - Optimize memory: players only mount while visible via FlatList windowSize - Configure ExoPlayer buffer options and caching for short clips - Tap to toggle audio focus, long press to open in full viewer Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
37 lines
1.3 KiB
Markdown
37 lines
1.3 KiB
Markdown
# Specification Quality Checklist: VideoWall
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**Purpose**: Validate specification completeness and quality before proceeding to planning
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**Created**: 2026-02-25
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**Feature**: [spec.md](../spec.md)
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## Content Quality
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- [x] No implementation details (languages, frameworks, APIs)
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- [x] Focused on user value and business needs
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- [x] Written for non-technical stakeholders
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- [x] All mandatory sections completed
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## Requirement Completeness
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- [x] No [NEEDS CLARIFICATION] markers remain
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- [x] Requirements are testable and unambiguous
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- [x] Success criteria are measurable
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- [x] Success criteria are technology-agnostic (no implementation details)
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- [x] All acceptance scenarios are defined
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- [x] Edge cases are identified
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- [x] Scope is clearly bounded
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- [x] Dependencies and assumptions identified
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## Feature Readiness
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- [x] All functional requirements have clear acceptance criteria
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- [x] User scenarios cover primary flows
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- [x] Feature meets measurable outcomes defined in Success Criteria
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- [x] No implementation details leak into specification
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## Notes
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- All items pass validation.
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- Assumptions section documents reasonable defaults for format choice, column layout interpretation, and infrastructure reuse.
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- No [NEEDS CLARIFICATION] markers were needed — the user description was specific enough to make informed decisions for all requirements.
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