Publitio offers powerfull REST & URL-BASED APIs for Media Asset Management. We believe development must be an enjoyable, creative experience to be truly fulfilling. Publitio attempts to take the pain out of whole MAM process by easing common tasks used by majority of web & mobile publishers, such as media files uploading, hosting, processing, publishing, monetization and management.
For more info check out Publitio website
Or check detailed documentation for Publitio Video & Image API
Publitio WordPress Plugin is Open Source, you can contribute to the development at: https://github.com/ob1y2k/publitio_wp_plugin