The next pixel shader operator in the list is the deinterlace (blend) a.k.a. one of the most useless deinterlacer out there. Hardware deinterlacer in video cards (pixel-adaptive/motion adaptive in ATI cards or even software-based deinterlacers in ffdshow and DScaler) works much better. This pixel shader operator will try to deinterlace all videos even progressive ones (which is basically all downloadable fansub releases out there) causing them to look blurry. It doesn’t really work on some of my interlaced DVD either, it fails to deinterlace them properly.
The next pixel shader operator that matters is BT601 —> BT701 (supposed to be BT709) colour conversion. The former colour set is used in SD videos like DVD while the latter is used in HD videos like DVB-T broadcasts or even HD-DVD/Blu-ray movies. Which one is better, well it all comes down to your preferences. I hope those release groups who rips from Blu-ray/HD-DVD will have already used ColorMatrix in their Avisynth script so that they will automatically use BT709. Personally, I stick with BT601 for downloaded fansubs that used TV rips so that the colour is more accurate.
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