Have it just be a caption under the video asking users to tweet if they like it. Maybe even have it slide down into view after the video, or 5 minutes into it,

Have it just be a caption under the video asking users to tweet if they like it. Maybe even have it slide down into view after the video, or 5 minutes into it, or right after the best part of the video. Blocking the video with the prompt strikes me as hamfisted. Particularly for a technical audience that's aware of how these sharing mechanisms work.