Troubleshooting
Fix Compression Artifacts in Planetary Videos
Remove blocky artifacts and color banding from smartphone planetary videos. Best settings for compressed footage.
Quick Solution
Use Sigma-Clip Stacking stacking algorithm for the best results.
Statistical outlier rejection - for scientific-quality results
Common Causes
- 1H.264/H.265 video compression
- 2Low bitrate recording settings
- 3Smartphone video encoding
- 4Re-encoding or format conversion
How to Fix It
1
Use Sigma-Clip stacking to remove compression outliers
2
Median stacking also handles compression artifacts well
3
Avoid over-sharpening which emphasizes artifacts
4
Process at higher bit depth (16-bit)
Settings to Adjust
Stacking AlgorithmBit DepthSharpening Amount
These settings in Uranum's Advanced Mode can help resolve this issue.
Prevention Tips
- -Record at maximum quality/bitrate setting
- -Use ProRes or similar if available on your device
- -If possible, use SER or AVI format instead
Why Sigma-Clip Stacking?
Sigma-Clip Stacking
IntermediateStatistical outlier rejection - for scientific-quality results
How it works:
- 1.Calculates mean and standard deviation for each pixel across all frames
- 2.Values beyond 2.5 sigma (standard deviations) are flagged as outliers
- 3.Iterates 3 times to catch outliers that skewed initial statistics
Best for:
- -Removing cosmic ray hits that appear as bright dots
- -Cleaning hot pixels and column defects from uncooled sensors
- -Videos contaminated with multiple satellite trails
Try with Your Planet: Sigma-Clip Stacking
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