Green/Black screen when using multi-pass 1st pass or two-pass.

[Balefor]

I was wondering why it is that I'm getting a Black or Green screen when i encode my videos with the Multi-Pass 1st pass for DivX, or the Two-Pass for XVID. Can someone please help me out? Try to help me correct the problem? I have my latest video card driver which is ATI Catalyst 6.4 for Radeon. Any help would be greatly appreciated.

[jagabo]

Because during the first pass the codec is only looking at the video to see what parts need more/less bitrate. It's only during the second pass that it actually saves the data.

Xvid has a setting which will save the compressed video from the first pass. Set the codec up for 2-pass, first pass. Then press the more... button next to the encode type pulldown. Deselect Discard First Pass. I think the first pass is done in constant quantizer with a target quantizer of 2. It will be pretty big but very good quality. And will have no relationship to the quality of of the second pass.