Thanks for your reply. I have used before the information Dafydd provided in order to create new .prx files. It works well, and it helps me in the past a great deal when I need to modify resolution, audio quality, and such things. That is, using the Windows Media Profile Editor.
But as you know, there are many variables to set. I guess what I was really looking for was to see if anyone created the perfect recipe, or even a very good recipe (in the form of a .prx file) for maximizing the quality of the video after YouTube's done doing whatever it does with what one uploads. Especially for the new player. By recipe, I mean the optimal parameters for res, frame rate, video bit rate, etc., and many others.
I mean I can continue my trial-and-error path, but I try to see if anyone has already skinned the cat.
But since you say that 1280x720 and 2500kbps vbr is all what it takes to make it the best, then I will go do so. It's just that I see some really high quality videos out there on YouTube now, and I fail to get anything to look as good, even if what I have produced from PD7 is 1440x1080 originally and it plays crystal clearly in, say, Windows Media Player. Then I load it to YouTube and it looks like junk. Do you know what I mean?
Ich springe, weil vollkommene Flugzeuge nicht existieren.