Police said it is examining authenticity of the video and that photographs of eight persons, suspected to be outsiders who allegedly raised in anti-national slogans at the event, have been shortlisted. But they are yet to be identified.
In the video, the youths, whose faces appear covered, are seen raising slogans against India at the event on February 9.
The video surfaced on a day the Delhi Police, in its status report filed in the High Court, claimed that besides JNUSU president Kanhaiya Kumar and other accused persons, some "foreign elements" were also present during the event who had "covered" their faces to hide their identity.
The report said, "It is pertinent to mention here that shockingly the incident dated February 9 records the presence of foreign (elements) with their mouths covered which sufficiently came during the course of investigation."
Several videos of the event have surfaced since the row broke out leading to police arresting Kumar on charges of sedition from the campus triggering widespread protests.
Khalid and another student Anirban Bhattacharya surrendered last night after 10 days in hiding.