# Document enrichment limitations
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When you use document enrichment, be aware of the following limitations that affect how you can process different types of content.

## Multimedia content limitations
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Document enrichment doesn't support the following multimedia file types:
+ Audio files - You can't use document enrichment operations on audio content.
+ Video files - You can't use document enrichment operations on video content.

## Visual content in documents limitations
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When you work with visual content in documents, the following limitations apply:
+ If PostExtractionHook is configured, visual content in the document is ignored and not Indexed.

### Connector-specific Document Enrichment behavior
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When you enable visual content in documents, PreExtractionHookConfiguration operations for the following connectors are limited to metadata updates only:
+ Web Crawler
+ ServiceNow
+ Confluence
+ Salesforce
+ SharePoint