Hi Pascal, I agree. MCBPC should always be 9 bits or less. Stuffing is 9 bits long. However, I believe Xvid handles this correctly, doesn't it? Regards, Michael Quoting pascal.massimino at free.fr: > > > Hi, > > it seems to me MCBPC stuffing is also 9 bits long for P-VOP, like I-VOP. > Can someone confirm please? > > skal > >