2. Comparison Options

Settings->Misc

Percent

• Minimum percentage that files must match before they are considered duplicates.
• Default value = 94%
• The lower the percentage, the greater the chance of producing false positives. 80% is the recommended lowest value.
• The higher the percentage, the greater the chance of missing duplicates. 96% is the recommend highest value.

Duration Difference

• Only scan files against each other where the duration is not bigger/smaller than Duration Difference.
• Default value = 20%
• The lower the percentage, the greater the chance of missing duplicates.
• The higher the percentage, the greater the chance of producing false positives.

Ignore Black Pixels

• Skip black pixels when comparing files.
• Default value = disabled (unchecked)
• Lowers the chance for 'false positives' if thumbnails contain too much dark
• Raises the chance to detect duplicates if one of the thumbnails have black bars and the others does not.
• In rare scenarios this might raise the 'false positives' instead.
• Slows down the scan speed by a bit.

Ignore White Pixels

• Skip white pixels when comparing files.
• Default value = disabled (unchecked)
• Lowers the chance for 'false positives' if thumbnails contain too much brightness
• Raises the chance to detect duplicates if one of the thumbnails have white bars and the others not.
• In rare scenarios this might raise the 'false positives' instead.
• Slows down the scan speed by a bit.

Compare Horizontally Flipped

• Select this option to reliably detect horizontally flipped videos.
• Default value = disabled (unchecked)
• Slows down the scan speed by a bit.