Reproduction case for many clips freezing issue #87
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- Change imports from core-v4 to core in all playground files - Replace single animated video clip with multiple clips using sequential layer - Split 20-second video into 50 clips with 4-second minimum duration each - Use sliding window approach where clips overlap to maintain minimum duration - Skip clips that would exceed video duration - This setup helps reproduce browser hanging issue when adding many clips
- Remove all layers except video clips layer - Remove unused sources (images, audio, captions) - Remove font loading - Keep only the essential code for reproducing many clips issue - Composition now only contains 50 video clips of 4 seconds each
- Set CLIPS to 40 and minClipDuration to 3 - This configuration reliably reproduces the freeze after ~4 seconds of playback
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Pull request overview
This PR creates a minimal reproduction case for issue #86 where having many clips (more than 30) in a composition causes the player to freeze during playback. The changes simplify the playground example by removing all non-essential elements and creating 40 overlapping video clips from a single source using a sliding window approach.
Key Changes:
- Changed package dependency from
@diffusionstudio/core-v4to@diffusionstudio/core - Simplified composition to only include 40 video clips with 3-second duration each, created using a sliding window pattern
- Removed all other layers, effects, and animations to isolate the freezing issue
Reviewed changes
Copilot reviewed 5 out of 6 changed files in this pull request and generated 1 comment.
Show a summary per file
| File | Description |
|---|---|
| playground/composition.ts | Replaced complex multi-layer composition with simplified reproduction case creating 40 overlapping video clips |
| playground/timeline.ts | Updated import statement to use new package name |
| playground/render.ts | Updated import statement to use new package name |
| playground/main.ts | Updated import statement to use new package name |
| playground/controls.ts | Updated import statement to use new package name |
| package-lock.json | Updated package dependency from @diffusionstudio/core-v4 to @diffusionstudio/core with version 4.0.1 |
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Description
This PR provides a minimal reproduction case for the issue where having many clips (more than 30) in a composition causes the player to freeze during playback.
Changes
How to Reproduce
Related Issue
This reproduction case demonstrates the issue described in #86
Notes
The freeze happens consistently when there are many clips in the composition, regardless of the video duration. The timing of the freeze is inversely related to the number of clips - more clips cause the freeze to occur sooner.