Also the launch video is amazing. The moment the engines ignite the whole thing is moving most likely because those are solid rocket boosters and there's no throttle up time: https://www.youtube.com/watch?v=ae6LVG0j1Pg
Yes. GSLV Mk III first stage is made up of two S200 solid boosters, with 200 ton propellant in each. S200 is the third largest solid boosters in the world (after Shuttle SRB, and P230 of Ariane-5).
I don't know why the video quality is so shitty. My cellphone takes better quality footage than this. I would assume they could have used a tiny portion of their multi-million $ budget for some decent cameras.
Props to them for having old school, Apollo-style consoles in the mission control room. You loose something when you have youngsters with a bunch of Dell monitors like spaceX. I've seen twitch on the second monitor in spacex control room.
The lift-off start position is at 3:45.