MIME|Content Type Registry entry

Specify the MIME type for a particular file extension; alternatively, override the association of a MIME type and file extension recorded in the Windows registry.

Description

By default EMu uses the Windows registry to determine the MIME type for a given file extension. If the MIME type cannot be determined, or we want to ensure that a MIME type is registered for a given file extension, the Mime|Content Type Registry entry can be used. For example:

Mime|webm|Content type|video/webm

tells EMu that if a resource in the Multimedia module has a .webm extension, then MIME Type (MulMimeType) = video.

This entry can also be used to override an invalid MIME type registration in the Windows registry. Sometimes a third party application can install a bad MIME type in the Windows registry and as a result Multimedia records created for that application will contain an invalid MIME type value. By preceding the MIME value with a plus + symbol, it is possible to override an invalid Windows registry entry. For example:

Mime|webm|Content Type|+video/webm

will force the Mime entry for .webm files to be video/webm regardless of what is stored in a user's Windows registry.

Usage

This Registry entry is assigned at the system level only:

Key System
Key 1 Mime
Key 2 file extension
Key 3 Content type
Value mime type/file type
Mime file extension Content type Mime type/file extension

where:

file extension is the file extension of a particular resource (without the dot (.)), e.g. webm.

Mime type/file extension

is a Mime type paired with a file extension (without the dot (.)) .

MIME types are:

  • video
  • audio
  • image
  • application

Placing a + in front of the Mime type/file extension pairing will enforce the pairing and EMu will ignore any Windows registry entry for the file type.

Example

This entry tells EMu that if a resource in the Multimedia module has a .webm extension, then MIME Type (MulMimeType) = video:

Key Setting
Key 1 Mime
Key 2 webm
Key 3 Content type
Value video/webm

This entry tells EMu that if a resource in the Multimedia module has a .webm extension, then MIME Type (MulMimeType) = video regardless of any Windows registry setting for .webm files:

Key Setting
Key 1 Mime
Key 2 webm
Key 3 Content type
Value +video/webm