DVD Quality Enhancement 4, Continued
Other Pulldown Tests: out of 40 points
Other cadences are rarely used compared to 2:3 pulldown, but occasionally they do show. For example, Japanese Anime is based on eight frames per second. The following cadences are tested with a short clip, and if the DVD decoder identifies and corrects them properly the jagged interlace artifacts are eliminated:
2:2:2:4 DV Cam
2:3:3:2 DV Cam
The Pulldown tests
I'd like to mention that I think HQV assigns far too many points for some obscure pulldown ratios that aren't used too much. Having said that, if you happen to watch a DVD that uses one of these pulldown ratios, there is a huge quality loss if your player can't handle it.
Software: 13 points
PowerDVD seemed to detect and fix 2:2 Video and 6:4 animation pulldowns perfectly for five points each, and seemed to improve 2:2:2:4 pulldown enough for three points. It did nothing for the rest of the ratios, but still, that's pretty good for software. But I found it very strange that they didn't make 3:2 pulldown - the most common pulldown on DVD films - a priority.
ATI Avivo: 40 points
Perfect - as long as you remember to check the pulldown detection checkbox in the catalyst driver. If you forget, Avivo will fail all of these tests, so make it a priority to do that if you have an ATI card.
Geforce Purevideo: 40 points
Also perfect - as long as you remember to check the inverse telecine checkbox in the Nvidia driver panel.