Custom Metadata

This page is about valid key-value pairs which can be used within Adobe Premiere Pro + Media Encoder and synced to Cosmo.

In general Adobe is following the default definition of allowed character for xmp.

Key

• Are case-sensitive

• Can not start with a number

• Can not contain underscore (_)

Value

• Are case-sensitive

• Can start with a number, contain only numbers, or be a combination of numbers and letters

• Can contain underscores (_)

Example for metadata key

Metadata key: "key_value pair" This is not valid because there is a underscore in the key name. While values can contain spaces, keys can not.

Metadata key: "1story" This is not valid because the key starts with a number which is forbidden.

Disallowed characters in keys or values

The following characters are reserved and not allowed in key names or values.

Character	not allowed in	Description
"	Key	Double quotes
'	Key	Single quotes or apostrophe
=	Key/Value	Equal sign
!	Key	Exclamation point
+	Key	Plus sign
#	Key/Value	Pound or hash symbol
*	Key/Value	Asterisk
~	Key/Value	Tilde
;	Key/Value	Semicolon
^	Key/Value	Caret
()	Key/Value	Parentheses
< >	Key/Value	Angle brackets
[ ]	Key/Value	Square brackets
,	Key/Value	Comma
&	Key/Value	Ampersand
|	Key/Value	Pipe
?	Key	Question mark
:	Key/Value	Double point

Umlauts

As umlauts are often treated as special characters, those can cause issues when working on different operating systems as well with foreign language projects.

Within Helmut4 we have defined the most known and used umlauts in the European region to be proper detected & escaped when indexing a project.

Lower case	Uper case	Description
ä	Ä	German
ö	Ö	German
ü	Ü	German
ß	ẞ	German
æ	Æ	Northern Europe
ø	Ø	Northern Europe
å	Å	Northern Europe
-	À	Western Europe
â	Â	Western Europe
ç	Ç	Western Europe
è	È	Western Europe
é	É	Western Europe
ê	Ê	Western Europe
ë	Ë	Western Europe
î	Î	Western Europe
ô	Ô	Western Europe
œ	Œ	Western Europe
ù	Ù	Western Europe
-	Ÿ	Western Europe
ì	-	Western Europe
ó	-	Western Europe
ó	-	Western Europe
õ	-	Western Europe
ò	-	Western Europe
ú	-	Western Europe