🎬 Frame Arena: Frame by frame comparisons of any videos
🎉 This tool has been created to celebrate our Wan 2.2 text-to-video and image-to-video endpoints on Replicate. Want to know more? Check out our blog!
- Upload videos in common formats with the same number of frames (MP4, AVI, MOV, etc.) or use URLs
- 7 Quality Metrics: SSIM, PSNR, MSE, pHash, Color Histogram, Sharpness + Overall Quality
- Individual Visualization: Each metric gets its own dedicated plot
- Real-time Analysis: Navigate frames with live metric updates
- Smart Comparisons: Understand differences between videos per metric
Perfect for: Analyzing compression effects, processing artifacts, visual quality assessment, and compression algorithm comparisons.
Video 1
Video 2
📁 Example Video Comparisons
Click any example to load video pairs:
| Upload Video 1 | Upload Video 2 |
|---|
Video 1 - Current Frame
Frame Slider (Left: Video 1, Right: Video 2)
◢◢
Video 2 - Current Frame
0 0
📊 Metric Analysis
📊 Metrics Explained
- SSIM: Structural Similarity (1.0 = identical structure, 0.0 = completely different)
- PSNR: Peak Signal-to-Noise Ratio in dB (higher = better quality, less noise)
- MSE: Mean Squared Error (lower = more similar pixel values)
- pHash: Perceptual Hash similarity (1.0 = visually identical)
- Color Histogram: Color distribution correlation (1.0 = identical color patterns)
- Sharpness: Laplacian variance per video (higher = sharper/more detailed images)
- Overall Quality: Combined metric averaging SSIM, min-max normalized PSNR, and pHash
🎯 Quality Assessment Scale (Research-Based Thresholds)
SSIM Scale (based on human perception studies):
- 🟢 Excellent (≥0.9): Visually indistinguishable differences
- 🔵 Good (≥0.8): Minor visible differences, still high quality
- 🟡 Fair (≥0.6): Noticeable differences, acceptable quality
- 🔴 Poor (<0.6): Significant visible artifacts and differences
PSNR Scale (standard video quality benchmarks):
- 🟢 Excellent (≥40dB): Professional broadcast quality
- 🔵 Good (≥30dB): High consumer video quality
- 🟡 Fair (≥20dB): Acceptable for web streaming
- 🔴 Poor (<20dB): Low quality with visible compression artifacts
MSE Scale (pixel difference thresholds):
- 🟢 Very Similar (≤50): Minimal pixel-level differences
- 🔵 Similar (≤100): Small differences, good quality preservation
- 🟡 Moderately Different (≤200): Noticeable but acceptable differences
- 🔴 Very Different (>200): Significant pixel-level changes
🔍 Understanding Comparisons
Comparison Analysis: Shows how similar/different the videos are
- Most metrics indicate similarity - not which video "wins"
- Higher SSIM/PSNR/pHash/Color = more similar videos
- Lower MSE = more similar videos
Individual Quality: Shows the quality of each video separately
- Sharpness comparison shows which video has more detail
- Significance levels: 🔴 MAJOR (>20%), 🟡 MODERATE (10-20%), 🔵 MINOR (5-10%), 🟢 NEGLIGIBLE (<5%)
Overall Quality: Combines multiple metrics to provide a single similarity score
- Formula: Average of [SSIM + normalized_PSNR + pHash]
- PSNR Normalization: PSNR values are divided by 50dB and capped at 1.0
- Range: 0.0 to 1.0 (higher = more similar videos overall)
- Purpose: Provides a single metric when you need one overall assessment
- Limitation: Different metrics may disagree; check individual metrics for details