Sorry for being unclear. I mean the rainbows and dot crawls I have eliminated to a great extent thanks to BlendBob and other filters the main problem at the moment is the fact that there are breaks in lines where there shouldnt be or the lines thin out in parts making it seem like the lines are moving... It really irritates me though its probably watchable. The reason I posted that there were rainbows and dot crawls was just in case if that could screw anything up. Also I dont know if it matters but the IDCT algorithm I am using is the Simple IDCT from the Xvid project as stated from DGbob help file. Edit: Also I dont know if this helps but FieldDeinterlace(full=true) works great except it ghosts and if I interpolate it instead (full= true , blend=false) the anti-aliasing goes away and everything becomes jaggy even in frames with out any interlacing (this even happens with full = false ) so I am at a loss to what to do its confusing me to a good extent :