I have had this problem for a while, including with VP17 and movie studio platinum 15 but here's the issue:
When I have 4k (3840x2160) footage and render it to 720x480i widescreen, for DVD use, I have these tiny black bars on the side:
But when I render the same file to 1920x1080 and THEN to 720x480 widescreen, I get no black bars:
For me to go directly from 4k to 720x480i widescreen I have to enable "stretch video to fill output frame size" option.
Now I don't really want to have it be distorted with that option but I also really don't want to have to render to 1920x1080p, first, and then to 720x480i.
Is there anything I can do to go directly from 4k to 720x480i widescreen, without that stretch option?