I started doing a Let's Play of Fallout New Vegas modded, and I've done these lets play's before in usually youtube wants me to send the EULA of the publisher and explain that its a walkthrough, although with Bethsda there seems to be no end user license agreement anywhere? anyways this is what youtube sent me.

We need to verify that you are authorized to Commercially use all of the visual elements in your video. Please provide the following information so we may examine your claim:

• Name of the video-game
• Name of the video-game publisher
• Direct link to the publisher licence terms, permitting commercial use of game footage