DR 21TapVid is an AI explainer video generator that turns a prompt, PDF, document, or link into a motion-graphics video. It assembles the outline, script, visuals, voiceover, and subtitles in a single pass, so source material becomes a publish-ready clip without opening a timeline editor. Three modes cover the workflow. Explainer Video turns a prompt, PDF, or link into a finished clip with motion graphics. One Shot produces a complete video from outline to script to final output in one run. Intelligent Edit revises the result through plain-language instructions instead of frame-level editing, so refinements are typed rather than cut. Rendering is billed in credits at roughly 3 credits per second of finished video, and renders that fail or time out have their credits returned. Free exports are 720p with a TapVid watermark, while Pro, Max, and Ultra export watermark-free 1080p, with clips up to 3 minutes on Pro and Max and up to 5 minutes on Ultra. TapVid also publishes an API and MCP entry point, and its interface is available in seven language versions.