VOB file = jittering image

nicholasong wrote on 1/3/2007, 9:22 AM
I extracted video clips from DVD which are in VOB format . Why did the clips jitter after rendering with Vegas? But if extract it and then save it as mpeg2 using sound forge and then render using Vegas the problem stops. Can't vages work with VOB files directly? will the video quality drop if I save it as mpeg2 b4 editing? Please help. Thanks.