@Lightspeed,
Sorry I didn't explain what's Overall PSNR before.

I quoted this from a member who explained it in the above article: Please have a read.
I'll try to explain the difference between Overall PSNR and Average PSNR as far a I understand it. The average PSNR (first graph) is calculated by the average PSNR values (as the name already says )of the single frames. This means for the final result it doesn't matter how constant the quality of the video is. As an example you can take three frames. Codec A delivers a result of 10dB for the first frame 40dB for the second and 70dB for the third. Codec B delivers 39dB, 40dB and 41dB. The average PSNR for those two codecs will be exactly the same. Nevertheless in "real life" you would certainly prefer the quality of codec B because nobody wants a frame with 10dB in his encode.
Overall PSNR on the other hand takes into account how constant the quality of the video is. But please don't ask for the exact formula of Overall PSNR. It's quite complicated (You can search in the Avisynth forum when you are interested).
So IMHO the Overall PSNR is preferable because it's the aim of the 2pass mode to deliver as constant quality as possible.
I hope that helps.
And yes I do agree with you that the result is the most important. These are actual test results which are done by a member called Sagittaire. He has provided links of those test video clips to download and see yourself as well.
However, if you find DivX 5.02 is better than DivX 5.1.1 that's fine. The newest is not always the best. The best is not the best for everyone.
When I have got some free time, I will spend some time to test myself the difference between the DivX 5.02 codec and DivX 5.1.1.
By the way, did any of you test the quality of the sample video I mentioned next? I got no comment about that yet.
Cheers,
McoreD
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