When my dad past away from a stroke 4 years ago, we barely even wanted to look at a picture of him just because of the sorrow that comes with him. Recording memories is is nice but when the grim reaper finally has his way, it just doesn't get any happier. Even today the thought of my dad coming up in a conversation strikes everyone to be quiet. He was a good man and all but just the consideration of death is something that should be avoided.
In my opinion, the only thing you should keep around is something like a family photo in the living room or something. Overwhelming your kids with a lot of information about their deceased mother when they ask about her will make them wonder (for a very long time) how she was and that will always leave a blank spot of continuous doubt if she was exactly like that. Even a video can be deceiving of ones emotions to how someone really acts in reality.