Adobe 12040118 - After Effects Standard Using Manual page 42

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AVItem proxySource attribute
app.project.ite m(index). proxySource
Description
The proxySource attribute is the FootageSource being used as a proxy.
The attribute is read-only, but it can be changed by calling any of the AVItem methods that change the proxy
source: setProxy(), setProxyWithSequence(), setProxyWithSolid(), and setProxyWithPlaceholder().
Type
FootageSource; read-only.
AVItem setProxy() method
app.project.ite m(index) . s e t Prox y ( F i l e fi l e )
Description
The setProxy method sets a file as the proxy of an AVItem.
It loads the given file into a FileSource and establishes this as the new proxySource. It does not preserve the
interpretation parameters, instead using the user preference.
This is different than what happens with a FootageItem's main source, but both are the same behavior as the
user interface. If the file has an unlabeled alpha channel, and the user preference says to ask the user what to
do via a dialog, scripting will guess the alpha interpretation instead of asking the user. After changing the
proxySource, this method will set the value of useProxy to true.
Parameters
File
Returns
None.
AVItem setProxyToNone() method
app.project.ite m(index) .set Proxy To Non e ()
Description
The setProxyToNone method removes the proxy from this AVItem. Following this, the value of proxySource
is null.
Returns
None.
AVItem setProxyWithPlaceholder() method
app.project.ite m(index) .set Proxy Wit hP la ceh olde r( name, w idth, he ig ht, frameRate, dura t ion )
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file to be used as a proxy
Reference
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