Adobe 65009963 Scripting Manual page 70

JavaScript Reference
FootageSource hasAlpha attribute
a pp .p r o j e c t .i te m (i nd e x) .m a in So urc e. h a s A l p h a
a pp .p r o j e c t .i te m (i nd e x) .p roxySour ce .ha sA lph a
Description
When true, the footage has an alpha component. In this case, the attributes
have valid values. When false, those attributes have no relevant meaning for the footage.
p r e m u l C o l o r
Type
Boolean; read-only.
FootageSource highQualityFieldSeparation attribute
a pp .p r o j e c t .i te m (i nd e x) .m a in So urc e. h ighQ ua li t y Fie ld Se pa r at i on
a pp .p r o j e c t .i te m (i nd e x) .p roxySour ce .h i g h Qu a l i ty F i e l d S e p a r a ti o n
Description
When true, After Effects uses special algorithms to determine how to perform high-quality field separation.
It is an error to set this attribute if
Type
Boolean; read/write.
FootageSource invertAlpha attribute
a pp .p r o j e c t .i te m (i nd e x) .m a in So urc e. in v ert Al p ha
a pp .p r o j e c t .i te m (i nd e x) .p roxySour ce .i n v e r tA lp h a
Description
When true, an alpha channel in a footage clip or proxy should be inverted.
This attribute is valid only if an alpha is present. If
this attribute is ignored.
Type
Boolean; read/write.
FootageSource isStill attribute
a pp .p r o j e c t .i te m (i nd e x) .m a in So urc e. is S ti l l
a pp .p r o j e c t .i te m (i nd e x) .p roxySour ce .i sS t i ll
Description
When true the footage is still; when false, it has a time-based component.
Examples of still footage are JPEG files, solids, and placeholders with duration of 0. Examples of non-still
footage are movie files, sound files, sequences, and placeholders of non-zero duration.
Type
Boolean; read-only.
is true, or if
i sS t il l fie ld S ep ar at io nType
is false, or if
ha sA lph a
FootageSource object
,
a l p h a M o d e in v ert Al p ha
is
Fie l dSepa rat io nType.O F F
is
a l ph aMo de A l p h a M o d e . I G N O R E
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