The Satellite separation starts at 1:23 or so, after the Third stage. 88 of the satellites (nanosats?) were by Planet.com and will be used for imaging as part of their Flock 3p: https://www.planet.com/pulse/record-breaking-88-satellites/

r/ISRO has the complete payload details: https://www.reddit.com/r/ISRO/comments/5t7a75/pslvc37_cartos...

This is a fairly amazing video. I wonder what is the size of a nano satellite

I don't understand releasing them so close: isn't the whole point of a large number of satellites to give them different orbits ?

Another slightly better quality video: https://www.youtube.com/watch?v=cvJYSmplzXc

These cubesats are clustered closer than I thought they would be.