🎬 Upload SFR 4-frame 300k: Color Switch (infinite), Size Fixed (20px), Speed Random - compact temporal format, large-scale dataset

- 4 frames per video, 256x256 resolution
- 310,000 total videos
- HDF5 format with MP4 encoding
- SFR (Switch Color, Fixed Size, Random Speed)
- Generated with unified circle dataset generator

Dataset for video representation learning research.

README.md

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+# circle_behavior_SFR_4frames_300k
+
+SFR 4-frame 300k: Color Switch (infinite), Size Fixed (20px), Speed Random - color switching learning
+
+## Statistics
+- Training videos: 300,000
+- Test videos: 10,000 (shared with 30k dataset)
+- Total videos: 310,000
+- Frames per video: 4 (2 first half + 2 second half)
+- Resolution: 256x256
+- Storage format: HDF5 with MP4-encoded videos
+
+## Compact Frame Structure
+- **Frame 1-2**: First half of motion sequence
+- **Frame 3-4**: Second half of motion sequence  
+- **Switch Point**: Between frames 2 and 3
+
+## Behavior Configuration (SFR Pattern)
+- **S (Switch) Color**: Random/infinite variety per video - primary learning variable
+- **F (Fixed) Size**: 20px radius - consistent across all videos
+- **R (Random) Speed**: Random velocity per video - secondary variation
+
+## Sample Visualizations
+
+### Video Sequence Examples
+
+Here are sample 4-frame sequences showing the SFR behavior pattern (horizontal temporal progression):
+
+**Sample 1 - Color Switch Pattern:**
+
+![Sample 1 Sequence](sample_00_sequence.jpg)
+
+**Sample 2 - Different Color Transitions:**
+
+![Sample 2 Sequence](sample_01_sequence.jpg)
+
+**Sample 3 - Varied Movement Pattern:**
+
+![Sample 3 Sequence](sample_02_sequence.jpg)
+
+### Key Visual Features
+
+- **Color Switching**: Colors change unpredictably between frames
+- **Fixed Size**: All circles maintain consistent 20-pixel radius
+- **Random Speed**: Movement velocity varies between videos
+- **Large-Scale**: 300k samples provide comprehensive coverage of color patterns
+
+## Research Value
+This dataset enables color switching pattern learning in compact 4-frame format, focusing on visual attribute adaptation while controlling for size and allowing speed variation.
+
+## Large-Scale Benefits
+- **Enhanced Statistical Power**: 300k samples for robust color switching analysis
+- **Scale Comparison**: Direct comparison with 30k SFR using identical test set
+- **Consistent Evaluation**: Shared test set enables precise scale effect measurement
+
+Generated with bounds-safe CircleVideoGenerator.

test.h5

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train.h5

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