Android Video Downloader App

I'm in need of an Android video downloader application. Although I haven't decided on the number of video hosting sites that it should support, it will be good if it can support multiple sites.

Key Features:
- Android Compatible: The downloader app should be fully functional on Android devices.
- Multiple Sites: The ability to download videos from multiple video hosting sites.
- Video Conversion: The application should have the capacity to convert downloaded videos into different formats.

Ideal Skills
- Experience in Android app development.
- Familiarity with video download and conversion libraries.
- Knowledge of video hosting site APIs will be a plus.

Looking forward to working with you.