shaking sub texts

[hacbao]

After I finish authoring the DVD using IFOEDIT, I burned the .vob file on DVD.
However, the subtitles acted strangely:
The texts were shaking .

How can I fix it?
Thanks.

[CoNS]

From your other recent posts here and in the subtitles section I assume you're authoring the DVD with a SUP file that you've created yourself?

Which program did you use for the SUP creation? Srt2sup is known to make shaky subtitles with certain font settings. Use SubtitleCreator instead.