XML XML Encoder for Digital Asset Management

Question

My organization is moving all content to SharePoint 2013 next year. My problem is with the digital asset management and OOB WYSIWYG media library that you get with the platform: it does not insert metadata on photos, videos, etc. Back to the original source file.

The only workaround I can come up with so that our content is consistent and extensible is sidecar XML.

CAN ANYONE RECOMMENDS good resources for linking XML strollers to files stored in SharePoint 2013. I don’t want my organization to have hundreds of thousands of photos, videos, audio recordings, etc. was completely unmanageable if we decided to use another platform in the future.

PLEASE, HELP.

Thanks.