Now make your DVD settings exacly the same.

If your quality is bad then you probably have not made a 8M CBR M2V profile and captured at the pathetic 6M VBR M2V defaults. You need to go into your codec control panel and from that window hit your F1 key. It will take you directly to the codec help page. Click on the 'define codec presets' hyperlink and have a read. I recommend you make a 8M CBR M2V and a 6M CBR M2V. You must define the codec preset befor you capture. If you do not define a CBR then Edition will re-encode every time.

Steps

1. Codec preset made (6 or 8M M2V CBR) using the MPEG MP@ML reference set. Give it a meaningful name like 8M CBR Workflow.
2. Capture/Logging screen must use the media format you've defined in 1 above(ie 8M CBR Workflow) from the drop down box.
2. Time line Render/Fuse Codec Pres. to MPEG2
3. DVD export settings set verbatim to the Codec Preset you've made up front (ie 8M CBR Workflow settings)

Summary

Once all of this is accomplished you can go from analog to timeline to DVD without a render. Any variation will cause Edition to render and it's only natural. If you use VBR then you'll get a render no matter what.