Common
The media type tells the application that receives the data what kind of application is needed to process the content, e. g. Real Audio is to play the audio content for a user.
Each of these media types also have subtypes, e. g. the text media type has four subtypes: plain, rich text, enriched, and
You can also specify how a media type should be recognized by the particular magic byte sequences of the files belonging to it.
To add a media type to the catalog, use the area labeled:
•Add or modify Media Type
In the upmost input field provided here, enter the media type you want to add to the catalog.
Furthermore, use the following items when adding a media type to the cat- alog:
—File Extensions
In the input fields provided here, specify up to three extensions that
files of the media type in question may have. So, e. g. the media type image/jpeg can have jpg or jpeg as extensions.
—Options
Configure the following options by marking the checkboxes provided for each of them:
– Magic bytes are necessary
If this option is enabled, a file that does not match the magic bytes
sequences specified for its media type will be affected by the action, e. g. Block, configured for the Media Type Filter.
The corresponding setting is labeled
>Media Type Filters.
–Magic bytes are ambiguous
If this option is enabled, a file that does not match the magic bytes
sequences specified for its media type will be affected by the action, e. g. Block, configured for the Media Type Filter.
It will, however, not be affected if several magic byte sequence were specified and one of them matches.
For the corresponding setting, see the description of the Magic bytes are necessary option above.