Dup Filter Implements a robust duplicate frame detector.
Download

Dup Filter Ranking & Summary

Dup Filter Tags

filter Frame AviSynth AVISynth filter Component Detector Webchange Detector duplicate frame Frame Detector duplicate detector Duplicate File Detector duplicate images detector duplicate files detector robust Data Detector Driver Detector game detector Difference Detector Architecture Detector

Dup Filter Description

The Dup Filter for Avisynth was designed to implement a robust duplicate frame detector. It is initially intended as a test bed for a new frame differencing algorithm, but to make it a useful filter in its own right, a copy feature has been implemented, whereby a frame that is determined to be close enough to its predecessor to be considered a duplicate will be replaced by a copy of the predecessor. This can significantly reduce the size of encoded clips with virtually no visual effect. It's a free lunch! ('Marc FD' first implemented this copying functionality.) The filter also now provides the capability to replace frames with a blend of all the duplicates, providing a valuable noise reduction. You can configure the percentage difference at which a duplicate is declared. This gives you control over the extent of frame duplication, and therefore of amount of bitrate reduction. The justification for the filter is simple. Many duplicate detectors are incapable of adapting to changes in the luminance levels of the various scenes in a clip, and they are badly affected by noise. They have delicate absolute thresholds that must be set by the user. This filter attempts to solve all of these problems. NOTE: The filter requires YUY2 or YV12 input.

Dup Filter Related Software