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AE is a lousy tool for creating a SWF file. Always has been. Most effects and animations do not translate to swf without enabling unsupported features which turns things into raster images which in turn makes the file size grow at an alarming rate.
AE makes movies and you should use Flash to point to those movies. That works very well.
I have heard that there are plans to remove swf as an export option because the two are not really compatible.
If the problem is that a SWF that you are using as source footage has been modified, this is because you have the preference enabled to write XMP metadata to imported files. Turn that off. (It's off by default in current versions of After Effects.) This preference is in the Media & Disk Cache preferences category.
Thx a lot!The problem has been solved.
However, I don't kwow excactly how this writing XMP function works,
After making an AE project, I usually use Media Encoder to export a movie (because I need a unique rendering setting)
If I turn off the XMP writing function, what would happened?Is there more information about this function I can know?
I read the discussion about XMP functions,
I think I suffered the same problem as Colins Brougham
:The file size become 200kb larger(more or less) and may corrupt the origianl file(which some clip totally disappeared)
It seems that not only because of the XMP ID(since it should occupy a little storage).
But I can't find any solutions or explanation except turn the XMP functions off, is that a bug or something?
I can understand when u want to mark the file exactly, the file size may become larger because u add some information on it,
But I really don't want the content of my SWF changed aftering importing into AE as a footage.Does that make sense?
As I said, just turn it off. You don't need it.