In addition to those implicit attributes, you can define any number of attributes via the following user interface:Īttributes serve the same function as plug-in parameters, but in a different scope. There are two default attributes which are always fed to the composition, the POSIX-style file path as well as the URL-encoded file path. The list of files is fed to the composition as an indexed structure (an array) whose members are named structures (dictionaries) containing attributes. The main design goal of the File List parameter is to feed a list of files to your composition. For these reasons, the “Display assets above when list is edited for the first time” option is off by default. However when the user clicks the “Choose” button you want the user to immediately pick his/her own media, rather than having to manipulate the default assets. When implementing a slideshow you may want the generator to immediately produce a meaningful output, hence you need a valid initial file list. However those files will not be used to populate the file selection UI. When the Display assets above when list is edited for the first time option is off and the user applies the effect, your composition will be fed the default assets so that it can render something meaningful. To avoid this problem, please make sure your default file list only contains references to assets embedded in the product.Īt the bottom of the Files section is the Display assets above when list is edited for the first time option, which controls whether the default files are displayed to the user when he/she clicks on the “Choose” button. Beginning with macOS 10.15 Catalina, using these file paths poses the danger of running against file access restrictions. In previous versions of macOS it was also possible to reference external files, by entering file or directory paths beginning with a forward slash character (“/“), or by a tilde (“~”), which gets expanded to the current user’s home directory at runtime. The list should only contain references to assets embedded in the FxPack. The files you reference in this list are fed to the composition when the plug-in is first applied. The “Files” section lets you choose an initial list of files that will be used by the parameter.
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