I know. I know. Why waste good 4K video by putting it onto a DVD. Things is, I have loads of clients that still want dance recitals on DVD. My quandary is this... In Vegas 21, I drop my 4K footage onto a 3840x2160 timeline to edit (using proxy videos). Then render the finished edit as MPEG2 (NTSC Widescreen). In researching cameras and dance/stage video recording, I saw a videographer talking about how he shoots in 4K, and then drops the footage onto an HD timeline (explaining that he can adjust the picture and framing of the 4K footage, without losing much quality). What are the other advantages of dropping 4K footage onto a HD timeline? Is there any difference, since it's all going onto a DVD? Would it save time on rendering the finish product?