Ron and Harry die in a battle and Hermione and Ginny remember when they were around, and remember their deaths.
Greyscale - memories
half greyscale half colour - the girls think they're seeing harry/ron
full colour - after effects
2:47 - 3:17 is the day of there deaths and them getting remembered at their funeral
There is more Ron/Hermione because I couldn't find enough clips of Ginny.
I own nothing but the editing.