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Version 1.5.2

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@NickPittas NickPittas released this 19 Dec 17:41
· 24 commits to main since this release
v1.5.2
d38bd97

KAsset Manager 1.5.2 Release Notes

Release Date: December 19, 2025

Overview

Version 1.5.2 is a maintenance release focused on improving video scrubbing performance and stability across all grid views (Asset Manager, File Manager, and Project Manager).

Major Improvements

🎬 Enhanced Video Scrubbing System

In-Place Thumbnail Scrubbing

  • Direct Thumbnail Updates: Ctrl+mouse scrubbing now updates thumbnails directly instead of showing intrusive overlays
  • Unified Experience: Consistent scrubbing behavior across Asset Manager, File Manager, and Project Manager
  • Progress Indicator: Thin progress bar at the bottom of thumbnails shows scrub position

Performance Optimizations

  • GStreamer Pipeline Caching: Added PipelineCache class to reuse GStreamer pipelines for faster video frame extraction
  • KEY_UNIT Seeking: Optimized seeking strategy for better performance with MOV/MP4 files
  • Async Frame Filtering: Prevents timeline jumping by filtering out stale frame responses during fast scrubbing

Stability Improvements

  • Frame Ordering: Fixed async frame delivery issues that caused frames to jump to previous positions
  • Delegate Logic Fixes: Corrected File Manager delegate logic that was overwriting scrub frames
  • Registry Pattern: Implemented ScrubFrameRegistry singleton for reliable frame storage and retrieval

🛠️ Technical Enhancements

Backend Improvements

  • ScrubFrameRegistry: Singleton registry for managing active scrub frames across views
  • GridScrubController: Enhanced controller with position tracking and stale frame filtering
  • LivePreviewManager: Improved async frame request handling with position validation

Code Quality

  • Threading Rules: Maintained proper Qt threading patterns with queued signals
  • Memory Management: Efficient frame caching with LRU eviction (512MB limit)
  • Error Handling: Robust handling of async frame requests and responses

Bug Fixes

Video Scrubbing Issues

  • Fixed timeline jumping during fast scrubbing due to out-of-order async frame delivery
  • Resolved File Manager scrub frames being overwritten by file preview code
  • Eliminated intrusive overlay behavior in favor of in-place thumbnail updates

Performance Issues

  • Improved initial frame pickup speed for MOV/MP4 files
  • Reduced GStreamer pipeline creation overhead through caching
  • Optimized frame extraction with KEY_UNIT seeking strategy
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