Comparing Descaler sharpen before and after resize using the same resize setting is completely irrelevant.
You should use a MUCH lower setting for Descaler sharpen before resize.
My point is that using Descaler sharpen at a low setting before resize is similar to using it at a higher setting after resize.
Using it before resize saves a large amount of CPU that could be put to better use on other filters.
Sorry Mark, this was intended for bblue. I must have had a brain fade.
As for the Descaler deinterlace filters, well I have not found them to be much good.
I find that ffdshow's 5-tap lowpass deinterlacer works the best for me with video bases source.
DVD's are almost all from film source and do not need to be deinterlaced.
In fact, deinterlacing film based source will generally result in quality degradation.
I use PAL here (lucky me), so I can't comment on NTSC 3:2 pulldown issues.
Are you using Descaler sharpen before or after resize?
If Ds sharpen is used after resize the result is very subtle and many people will not be able to see much difference.
In contrast, if Ds sharpen is used before resize the result is VERY noticeable.
At high settings it looks VERY over sharpened. If you can't see that, then something is not working correctly.
Using DS sharpen after a substantial resize is not possible for me without stutters. Even using a P4 2.8C at 3.3G on a 942 FSB with 1Gig duel channel Corsair RAM and ASUS P4P800 MB.
I doubt that you will find Ds sharpen very useful for Divx. It works very well for DVD's though.
Forget about CPU usage as a guide to how well ffdshow is running.
It is normal to get stutter problems at only modest CPU load, as reported by Task Manager. Nothing new there.
I can use Ds sharpen, Resize to 1920x1080 with Lanczos Sharpen and Gradual denoise in that order without any problems or stutter. CPU load shows about 60%. But if I use Ds sharpen after resize I get bad stutters at only 80% CPU load in task manager. CPU load as reported by task manager is very deceptive. Running any filter on a 1920x1080 video stream is going to tax even the fastest cpu. With a 1440x1152 resize, playback is almost stutter free, so I guess that 1440x960 would be just possible using the same filters and filter order.
Descaler Sharpen is useful for bringing out fine details in DVD source. But most people will have to use it BEFORE resize to get stutter free playback. Anyway, it works better before resize, for most people IMHO.
Many people may find that Dscaler Sharpen works better then resize sharpen and it can be used on less powerfull systems. So give it a try.
I personally like to use both for my CRT display.
One last thing,
Using filter setting that others are using, thinking that this will give you the best result is the worst kind of folly.
Displays, personal taste and system capabilities differ so greatly that it is pointless.
You MUST experiment yourself to find the best settings for your system. It takes time, but it's the only way.
The ffdshow resize - sharpen dude