Tvar alfa
Popis
This effect creates an alpha channel (transparency) based on a file (e.g. PNG with alpha, PGM with luma information).
Parametry
Parametr |
Hodnota |
Popis |
|---|---|---|
Zdroj obrázků nebo videa |
Výběr souboru |
Select the file (image or video) to be used as the mask |
Jemnost |
Desetinné číslo |
When using Threshold determines how soft to make the edge around the threshold. Similar to feathering. 0.0 means no softness (hard edge), 1.0 means very soft (default is 0.10). |
Invertovat |
Přepnout |
Invert the alpha channel |
Použít Luma |
Přepnout |
Use the Luma information instead of the alpha channel |
Použít práh |
Přepnout |
Use the Threshold value |
Posun |
Timecode |
Start position of the mask file |
Ven |
Timecode |
End position of the mask file |
Práh |
Procentní podíl |
Sets the threshold for making opaqueness and transparency. Values below the value are made opaque, values above transparent. |
Poznámky
You can use a static image file or a video for animated masks
Příklady
Shape Alpha selecting the resource
Select the file you want to use for the mask
Shape Alpha error message in case no alpha
If the selected image or video file does not have an alpha channel, Kdenlive displays this warning message
Shape Alpha using Luma information
Instead of the alpha channel you can use the Luma information in the file
This is an example for how the Shape Alpha effect looks like when using a PGM image file with Luma:
Shape Alpha effect applied