Well, looks like NTSC support is already there in v0.8.0. From the readme:
Code:
Changes:
======================
v0.8.0: release: January, 12th 2004
+ Backup functionality in the same directory
+ Blanking of multiple TitleSets
+ Correction of VTS-sector positions
+ Directory/file-browser
+ Show size of video-VOBs
+ Blank video-streams for:
anamorphic and 4:3 PAL and NTSC