To mau,

Use Xing Video
decoder = When disabled the Intervideo WinDVD video filter is used.
this filter has slightly better quality than Xing's
filter and has less problems with subtitles. The filter
doesn't work well when ripping from HD though. When
enabled the Xing video filter is used which works good
when ripping from HD. Default is off (WinDVD filter).

用windvd filter的畫質較好, 字幕的問題較少.
但從硬碟轉VCD時, xing dvd filter比較沒問題.
如果你從硬碟轉VCD有問題, 此處才打勾.