About file type groups
File type groups store mappings between MIME types (equivalent to file formats) and the file types and the file type configurations that need to be used for those MIME types. In WorldServer, you typically assign file type groups to project types and to AIS target folders.
You can only apply file type groups to AIS folders. You cannot assign file type groups to individual assets.
How does WorldServer determine which file type to use when it segments an asset?
When segmenting assets, WorldServer detects the MIME type based on the source asset, but obtains the file type configuration in the project type or AIS property from the target asset.
The system uses the following process to find the right file type and file type configuration whenever it needs to segment an asset:
- It checks how MIME types are configured to obtain a base file type and file type configuration. If it does not find any other configurations, it uses these ones.
- It examines the file type configuration in the project type or in the AIS property.
- If the project type or AIS property has no file type configuration assigned, the system uses the base file type and file type configuration.
- If the project type or AIS property is a valid file type configuration, the system uses the file type with the configuration specified in the project or property.
- If the project type or AIS property is a file type group, the system searches the file type group for an entry that contains the MIME type. If it finds such an entry, it uses the file type and configuration in that entry. If not, it uses the base file type and configuration.
Deleting custom objects referenced in file type groups
The following table presents the impact of deleting custom MIME types, file types, or file type configurations that are referenced in file type groups:
| Deleted object | Impact on file type groups |
|---|---|
| MIME types | The file type group entries corresponding to those MIME types are deleted automatically. |
| File types | The file type group entries that reference those file types are not deleted. However, in each entry, the deleted file type is replaced automatically with [Not translatable]. |
| File type configurations | The file type group entries that reference those configurations are not deleted. However, in each entry, the deleted configuration is replaced automatically with the default configuration for that file type. |