https://bugs.kde.org/show_bug.cgi?id=516933
Bug ID: 516933
Summary: Feature Proposal: Real-Time Timeline Rating Tool for
Rough Cut Acceleration
Classification: Applications
Product: kdenlive
Version First unspecified
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: wishlist
Priority: NOR
Component: Timeline & Editing
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Summary
-----------
Introduce a real-time rating tool that allows editors to assign subjective
interest values to timeline segments during playback. Ratings are stored as
timeline-linked metadata and can be used for conditional navigation and batch
editing.
This feature is intended to significantly accelerate rough cut workflows,
especially for long-form footage.
Estimated time saving: 20–30% reduction in rough cut time for long recordings.
Core Concept
---------------
While playing back footage, the editor assigns a rating to the current moment.
The rating:
Is stored only when the value changes
Creates timeline segments based on rating transitions
Is linked to precise timecodes
Input Methods
----------------
Primary input via:
Keyboard shortcuts (e.g., 0–3 or 1–5)
Mouse buttons (configurable)
Mouse scroll wheel (increment/decrement rating)
Optional:
UI slider for visual interaction
Keyboard and scroll input should be usable without moving focus away from
playback.
Rating Modes (Selectable)
------------------------------
1–5 star mode
3-level mode (Keep / Maybe / Remove)
0–3 quick numeric mode (optimized for speed)
Users can select preferred granularity in settings.
Timeline Visualization
-------------------------
A thin colored overlay at the top of the timeline:
Green = highest rating
Red = lowest rating
Gradient in between
This provides an immediate visual heatmap of subjective interest.
Navigation Functions
------------------------
Jump to next segment where rating < n
Jump to next segment where rating ≥ n
Configurable pre-roll offset before jump target
Batch Operations
--------------------
Remove all segments with rating < n
Create sequence from segments with rating ≥ n
Playback only segments ≥ n (automatic skipping of others)
Batch operations should allow configurable trim margins before and after cuts.
Team Workflow (Optional Advanced Feature)
--------------------------------------------------
Up to three independent rating tracks
Optional average calculation
Ability to toggle visibility per reviewer
Technical Considerations
----------------------------
Ratings stored only when value changes
Represented internally as time-segment metadata
Lightweight storage footprint
No frame-level continuous data required
Rationale
-----------
Current rough cut workflows require either:
Manual markers
Subclip creation
Repeated timeline scanning
This feature enables:
Fast subjective filtering
Structured first-pass review
Efficient second-pass refinement
It does not replace editing tools — it accelerates the selection phase.
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