One is--if the original footage is Hi-def (in this case 1280-720-AVCHD Lite from Pentax ZS3), and one wants to render to a normal DVD.
I first render to an mpeg-2 DVD-compatible file, using your default settngs for that purpose.
On playing that .mpg file though, it does not play smoothly, sometimes stutters, etc.
What is going on with the rendering to MPEG-2?