|
|
|
@ -17166,14 +17166,14 @@ Specify flags influencing the filter process. |
|
|
|
|
Available value for @var{flags} is: |
|
|
|
|
|
|
|
|
|
@table @option |
|
|
|
|
@item low_pass_filter, vlfp |
|
|
|
|
@item low_pass_filter, vlpf |
|
|
|
|
Enable linear vertical low-pass filtering in the filter. |
|
|
|
|
Vertical low-pass filtering is required when creating an interlaced |
|
|
|
|
destination from a progressive source which contains high-frequency |
|
|
|
|
vertical detail. Filtering will reduce interlace 'twitter' and Moire |
|
|
|
|
patterning. |
|
|
|
|
|
|
|
|
|
@item complex_filter, cvlfp |
|
|
|
|
@item complex_filter, cvlpf |
|
|
|
|
Enable complex vertical low-pass filtering. |
|
|
|
|
This will slightly less reduce interlace 'twitter' and Moire |
|
|
|
|
patterning but better retain detail and subjective sharpness impression. |
|
|
|
|