Hi Frank, hmm, number of channels. I tend to set Roto to use rgba instead of alpha only, just because i am too lazy to switch the viewer to display the alpha channel. Even though i might just need alpha downstream. Kind of going against my own agenda of keeping everything simple as possible :) Despite that, i still had the feeling of Rotos being more efficient.
On a side node: If i, lets say use a blur node set to use rgba, but downstream only use alpha from that (i.e. as a mask input on another node), will Nuke be slower because it blurs rgba instead of alpha only? Or will only the requested channels be calculated upstream? When you mention expressions, do you mean expressions on the Roto/Paint nodes themselves, or also generally in the script? And what would you consider excessive? :) Am 01.04.2015 um 11:17 schrieb Frank Harrison: > Hey Daniel, > > That's fascinating to hear, I wonder if it does relate to the bumber of > channels they use by default? > > There are various things you can do to make Roto and Paint appear slower, > such as use excessive numbers of expessions or view a node downstream of a > Roto with lots of comptationally expensive Nodes in between. > > If anyone does have any reproducable performance metrics or scripts they'd > like to share we'd love to see them, add them to our autotests and make it a > better experiance :) > > F. > > On Wednesday, April 1, 2015, Daniel Hartlehnert <dah...@gmx.de> wrote: > Hi Frank, > > thanks for an "official" answer :) > > My experience differs though, so i don't have any "metric" to base it on, > Marten. Only common sense and experience. Therefore my answer i gave before. > > > Am 01.04.2015 um 10:00 schrieb Frank Harrison: > >> Hey Guys, >> >> Under the hood the two Nodes are exactly the same, they just cater to >> different work flows. >> >> As a result, the only time RotoPaint should be slower is when you have >> paint/clone/smear strokes interleaved with bezier/bspine shapes. >> >> F. >> >> On Wednesday, April 1, 2015, Daniel Hartlehnert <dah...@gmx.de> wrote: >> Isn't it obvious? Roto node has much less functionality, hence it its much >> faster to process and has a smaller memory footprint. Bugs from the paint >> part of Rotopaint cannot destroy your script, Rotopaints with more than 100 >> strokes tend to slow down your script (if i ever see that progress bar from >> a rotopaint node i start to ...) >> Rotopaints are responsible for most broken scripts in my experience. >> >> Wyh would you use Rotopaint if you don't actually paint? >> >> Am 31.03.2015 um 20:14 schrieb Simon Björk: >> >>> For some reason I always reach for the RotoPaint node instead of the >>> regular Roto node. I'm not sure why I got into this habit, but it might be >>> (if I'm not mistaken) that the RotoPaint node was introduced before the >>> Roto node back in 6.0. >>> >>> Anyway, does anyone know if there's a difference in performance/stability >>> when doing just regular roto? We've all had or problems with the RotoPaint >>> node over the last couple of versions, but I have never actually compared >>> the two nodes to see if one is "better" than the other. >>> >>> >>> >>> >>> >>> ------------------------------- >>> Simon Björk >>> Compositor/TD >>> >>> +46 (0)70-2859503 >>> www.bjorkvisuals.com >>> _______________________________________________ >>> Nuke-users mailing list >>> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> >> >> >> -- >> Frank Harrison >> Senior Nuke Software Engineer >> The Foundry >> Tel: +44 (0)20 7968 6828 - Fax: +44 (0)20 7930 8906 >> Web: www.thefoundry.co.uk >> Email: frank.harri...@thefoundry.co.uk >> >> _______________________________________________ >> Nuke-users mailing list >> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > > -- > Frank Harrison > Senior Nuke Software Engineer > The Foundry > Tel: +44 (0)20 7968 6828 - Fax: +44 (0)20 7930 8906 > Web: www.thefoundry.co.uk > Email: frank.harri...@thefoundry.co.uk > > _______________________________________________ > Nuke-users mailing list > Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
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