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 (other Planar formats with 2.6 version) formats are supported. In case of RGB the minimum shift value determined for red green and blue colors is used and for YUY2 and Planar formats the Y value is used to determine shift required. The last determined shift value can be used in case determination fails
| 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 | 1 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 |
| use last determined value if failed on this scan line | uselast | boolean | true for use last value | false |
| To my index page | down load plugin | To Avisynth |