I import the original image in VV3 that just captured from DV which appears ghost and ripple especial when scene is moving. The preview quality I choose is preview, good and best won't be better. What should I do to eliminate it? Thank you very much for your help.
I suspect that what you are seeing is interlacing and it is perfectly normal. When you export your edited video back to the camcorder or tape and view it on a television, it will look fine.
Set the "Full resolution rendering quality" at Best in your Project Properties. Don't worry too much how it looks in the preview window. Use the Preview in Player tool to see how it will look when rendered.
The situation was, if the film I captured by VV3 from DV was named a.avi. I played a.avi by Windows Media Player or something else, the film is exactly good, then I import the film into VV3 to preview, ghost or ripple appeared in the Explorer preview.
You might check that the preview window is set to *not* display square pixels...
Also could you please post the properties of the clip when you right-click in explorer (copy and paste is OK), the project settings and the information below the preview window?
Looking at your preview, I noticed that the display dimensions do not match the preview dimensions, so perhaps you have "display square pixels" selected (right click in the preview window to un-select).
I also notice that the image in the preview is zoomed-in compared to the full-frame shown in the timeline. So, You might right-click again in the preview window and uncheck "display at project size".
You might be seeing the interlacing and truncation caused by the above two switches being active.
Yes, that's just interlace, don't worry about it, it will look great on final output.
The reason you don't see it when you set it for Video CD templates is because Video CD is not interlaced, so Vegas is de-interlacing the source footage.