[Pixelbasher]

maybe it could help to have a image to see exactly what kind of imperfection you talk about

[Pixelbasher]

Humm I have re-render making sure the field was setup properly (everything was a lower field footage and render)
and the frame rate was at 29.97 same for both, I seem it got something to do with rhe camera speed ?!
I think I will do the same thing whit horizontal movement to see if it come from the camera movement
Thank anyway if you have another input let me know

pixelbasher

[Pixelbasher]

I have just finish a project using Keylight in AE 7.0 and everything works fine what kind of problems do you have
maybe i could help,

[Pixelbasher]

Thaks Aaron

The problems happend when I render and when i RAM preview in after effect,
it’s seem to only happend whit the camera speed on a the vertical movement
I have try rendering whit and without field, the problems is still there,
I am preview the clip in FCP on a AJA card and it’s lower fields through a brdc monitor
and yes I have also put the motion blur effect, I have notice that the problems mostly append where there is a big contrast between the white backgrouns and the people in front ( but have no choice of the colors) the best part to see the BAD flcikering effect is at the end of the clip whit the men giving a kiss, and most of the forground peoples

There is a quicktime link
the codec is in H264 make sure to have the good quicktime
https://www.pixelbasher.com/flicker
is only 5Mo but no stream be patient

thanks everyone for your help.!!
pixelbasher