Other Project - School Promo - ISO Help

While making my music video I had to make school advertisement, the only catch was that I had a day to not only film it but edit it. This helped me learn a lot about time management because I had to get as much done in the small amount of time I had. Furthermore I learnt about soft outdoor lighting because at 00:28 I had to interview someone outside. The main problem I had after shooting was this video is the reason that I found out about the camera settings. The grain that is seen throughout was because of the 1600 ISO, this was very frustrating because I couldn't reshoot but it did help me figure it out in time for my music video shoot.