iDVD 7.1 green vertical line

i'm trying put dvd in idvd. when export project disk image, movies imported have green line down right hand side. apple menus not have line. i've double checked videos before importing them quicktime , vlc , neither show green line. when playing videos in idvd there no green line either. movies .m4v format quicktime (h.264-mpeg4-avc 854x480, mpeg aac stereo 48000hz) have solution?

 

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