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SoK/2025/StatusReport/Swastik Patel

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Revision as of 19:15, 30 March 2025 by Mrswastik-robot (talk | contribs) (Created page with "== Add animated transition preview support in Kdenlive == ===== Project Abstract ===== The goal of this project is to make Kdenlive's transition system more user-friendly and intuitive by adding animated previews. Currently, when users want to add a transition between clips, they have to rely on static icons or try the transition to see how it looks. This can be time-consuming and frustrating, especially when working with complex transitions. The solution adds live a...")
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Add animated transition preview support in Kdenlive

Project Abstract

The goal of this project is to make Kdenlive's transition system more user-friendly and intuitive by adding animated previews. Currently, when users want to add a transition between clips, they have to rely on static icons or try the transition to see how it looks. This can be time-consuming and frustrating, especially when working with complex transitions.

The solution adds live animated previews directly in the transitions panel. When users browse through available transitions, they'll see a small animated preview showing exactly how each transition works. This means users can quickly understand how a transition will look in their project without having to apply it first. The previews are automatically generated and cached, so they're always available when needed.

Deliverables
  • Live animated preview in the transition panel
  • Python script for generating transition preview GIFs
  • Code documentation and comments
Mentors
Weekly Progress
Week 1 - 2: Environment Setup and Initial Structure
  • Set up Kdenlive development environment
  • Studied existing codebase structure
  • Analyzed AssetListWidget and TransitionListWidget implementations
  • Created initial project structure and files
  • Implemented basic view switching mechanism in AssetListWidget
Week 3-4: Basic UI Implementation
  • Implemented QListView integration alongside QTreeView
  • Created basic TransitionIconDelegate class
  • Added view mode toggle button to toolbar
  • Implemented basic preview placeholder system
  • Set up initial preview directory structure
Week 5-6: Preview Generation System
  • Developed Python script for MLT-based preview generation
  • Created standardized preview clips (red and blue colored clips)
  • Implemented batch processing for transitions
  • Added preview generation button to toolbar
  • Created the Merge Request[1] containing all the changes.
Week 7-8: Preview Display and Integration
  • Implemented animated GIF preview rendering
  • Added proper scaling and centering of previews
  • Implemented preview loading and unloading system
  • Added debug logging for preview operations
  • Integrated preview system with existing transition model
  • End result looked something like this :
Week 9-10: Polish and Documentation
  • Added error handling for preview generation
  • Implemented fallback static previews
  • Polishing the final code
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