The following videos can be downloaded freely.They are published by CCRT Gov. of India and uploaded on the National Repository of Open Educational Resources.
These videos are very educative.. informing the viewer about the origin and the nuances of the dance form. The videos depict the typical musical accompaniment, the costume and the performance of the dance form
Please follow this link to the collection of videos on the NROER Site: http://nroer.gov.in/gstudio/resources/videos/#videocollections
A few samples have been linked here for reference: