yep - I've found the warp type to be ok. if it's rotating, turn on rotation, etc. i'm sure it'd be pretty easy to test but it always seemed to behave correctly and do what it says.
In general, a pattern is hardly EVER going to stay a perfect match to the start frame, so I tend to update the pattern, you know, every 5, 10 or 15 frames depending on how often it's subtley changing. yes, very shot dependent. Set it too low and you'll end up with little unnecessary notches in your tracks as it resets the pattern. set it too high and it will tend to slip as the track goes on. But find the sweet spot and it will "grip" nicely with no ill effects and little manual intervention. generally an 8 or 10 frame update was always a good starting point back in my Katana days, which also had this same feature. seems to be about the same in Nuke, but at a certain point you can kind of eyeball what you're tracking and know which way to cheat that number. there's the occasionally problematic track where you just have to set it to 1 (update every frame) so that it latches on to whatever it is you're trying to latch onto that is changing nearly every frame. that's kind of a special case. I also generally turn off the blue channel for tracking live action, just to clean up what I'm feeding the tracker. everything else, I've found the defaults are generally good. there are things like color correction and degraining and that sort of thing that can be done external of the tracker, but that's another story. On Mon, Jun 6, 2011 at 4:33 PM, Nick Guth <[email protected]> wrote: > Do you find that you generally have a set number of frames in between each > grab or is it shot dependent? For example, telling the tracker to always > grab every 10 frames, (comp length / value), or something similar? And do > you use this option with the warp type set to translate and get good > results? > > Thanks! > > On Mon, Jun 6, 2011 at 10:23 AM, J Bills <[email protected]> wrote: > >> unless the pattern is changing perspective, I find usually doing a pattern >> update every X number of frames gives smoother results with less jitter. >> >> >> >> >> On Mon, Jun 6, 2011 at 6:31 AM, Ben Dickson <[email protected]>wrote: >> >>> Nuke's tracker always seemed to fall apart on things I'd expect Shake's >>> tracker to handle happily.... until someone pointed out the warp settings in >>> the Settings tab - the Affine setting seems to do a much better job on >>> everything I've tried it with >>> >>> Is there any reason against setting it as the default (as part of our >>> customisations, not default Nuke)? >>> >>> In other words, is there any good reason "Translate" is default? The >>> tooltip says Translate is faster, but I haven't noticed any difference >>> (although I've not compared the modes on a fully-cached clip) >>> -- >>> ben dickson >>> 2D TD | [email protected] >>> rising sun pictures | www.rsp.com.au >>> _______________________________________________ >>> Nuke-users mailing list >>> [email protected], http://forums.thefoundry.co.uk/ >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>> >>> >> >> _______________________________________________ >> Nuke-users mailing list >> [email protected], http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> > > > > -- > Nick Guth > motion . composite . design > www.nickguth.com > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >
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