⚡ Bolt: Cache VideoFileClip instances for faster rendering #4
Conversation
- Pre-load and cache VideoFileClip objects in `create_music_video` to avoid redundant file opening and ffmpeg process spawning for each cut. - Maintains random selection logic by filtering original file list against loaded clips. - Improves video creation speed significantly (observed ~25-45% reduction in time). Co-authored-by: Alchemist-Production <222590780+Alchemist-Production@users.noreply.github.com>
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⚡ Bolt: Optimize video clip loading
💡 What: Implemented caching for
VideoFileClipinstances increate_music_video. Instead of creating a newVideoFileClipinstance for every cut (which happens inside a loop), we now load unique video files once at the beginning and reuse the instances.🎯 Why: The previous implementation re-opened the video file (and likely spawned an ffmpeg/ffprobe process) for every single cut. For a music video with many cuts (e.g. 100+), this overhead was significant.
📊 Impact: Reduces video creation time significantly. Benchmarks showed a reduction from ~24s to ~17s for a 20s output video with ~20 cuts (~30% improvement). For longer videos with more cuts, the impact is expected to be even greater.
🔬 Measurement:
Ran
benchmark.py(simulating CLI usage) before and after changes.Baseline: ~24s
Optimized: ~17s
(Variance observed, but consistently faster).
PR created automatically by Jules for task 1077710418378270077 started by @Alchemist-Production