We know one thing by the video. They did not put the nose down. It looked like they were coming down for a landing, flair and all. Double engine failure? I think I hear the engines in the original video, not the one from the cell phone.
After an accident and the full report is released, which is like a year later. There are people that will go through it all and make a video of everything that happened from beginning to end. What was said, and actions that were taken. What I noticed on a lot of these are that pilots get stressed. Even when warnings appear, they have to identify why that is happening, go through a checklist. And in a very limited amount of time. In many cases they do not. It's terrifying to tell you the truth.
If you fly an airbus, can it take off without flaps? What if you didn't know the reason you were losing altitude because flaps were retracted instead of landing gear? How much time to do you have to correct the mistake?