Some vhs tapes have time sync problems, and the rows exhibit severe jitter. This plugin examines the specified window of each of the rows and tries to find the amount by which the pixels are out of alignment, adds the sync signal width and shifts, to put them in correct alignment. Dark scenes with luma less than 50 or so may give erroneous results. The resulting voids at the right ends of the rows are greyed out or end color extended.
RGB32, RGB24, YUY2 and YV12 formats are supported. In case of RGB the red color only is used and for YUY2 and YV12 the Y value is used to determine shift required.
| Description | Name | Type | Limits | Default |
| Input clip | clip | none | ||
| maximum jitter in pixels | jmax | integer | within clip, >3 | 32 |
| threshold value for detection | th | integer | 40 to 255 | 80 |
| sync signal width | wsyn | integer | 0 to frame width-jmax | 10 |
| color to be extended or greyed out into blank area | extend | boolean | true for extend last pixel value | false |
| To my index page | down load plugin | To Avisynth |