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Overview#
The Evidence Derivatives Management system provides automated generation and tracking of derivative types from master evidence files for enhanced accessibility, analysis, and presentation. It transforms raw evidence into optimized formats including thumbnails, transcripts, previews, and analysis outputs while maintaining complete provenance tracking.
Key Features#
- Automated derivative generation for 12 types including thumbnails, previews, transcripts, and OCR text
- GPU-accelerated processing for video transcoding and image operations
- Format detection for 200+ file types with appropriate processing handlers
- Quality presets with fine-tuned control over resolution, bitrate, and compression
- Complete provenance tracking linking derivatives to master evidence files
- Batch processing for bulk derivative generation across case files
- Mobile-friendly derivative formats for field access to evidence
- Text extraction and OCR enabling full-text search across all evidence types
- Error recovery with automatic retry and fallback quality settings
- Storage-optimized derivatives consuming minimal additional space
Use Cases#
- Generating thumbnail grids and previews for rapid visual evidence browsing
- Creating transcripts from audio and video evidence for searchable text analysis
- Producing mobile-optimized evidence formats for field investigator access
- Batch-generating derivatives across entire case files for efficient review preparation
Integration#
The Evidence Derivatives Management system connects with evidence management, chain of custody, and disclosure workflows through distributed task processing.
Last Reviewed: 2026-02-23