Roto is just a subset of rotopaint, as users wanted a lighter tool. 
If you're not painting use roto. You can always drag the shaped into a rp node 
to 'promote' it. 



Howard

> On 31 Mar 2015, at 22:57, Ergin SANAL <erginsa...@gmail.com> wrote:
> 
> it works without premultipication, need to choose source as background and 
> replace the alpha. premult is distractive time to time.. cheerz
> 
> 
> 
>> On Wed, Apr 1, 2015 at 12:46 AM, Randy Little <randyslit...@gmail.com> wrote:
>> Roto node will output RGBA (or anything) I premult inside the roto node all 
>> the time so its just inline no extra premult step.  (not always a best 
>> practice fyi) but I do it :-/
>> 
>> Randy S. Little
>> http://www.rslittle.com/
>> http://www.imdb.com/name/nm2325729/
>> 
>> 
>> 
>>> On Tue, Mar 31, 2015 at 5:30 PM, Ergin SANAL <erginsa...@gmail.com> wrote:
>>> rotopaint's  output is rgba and roto's is only a.
>>> that means with rotopaint, nuke has to deal with 3 more channels. 
>>> maybe thats why there are some performance issues. 
>>> actually there are no difference between 2 nodes except output channels and 
>>> place of the sliders. (feather,opacity etc.) 
>>> 
>>> 
>>> 
>>>> On Wed, Apr 1, 2015 at 12:23 AM, Randy Little <randyslit...@gmail.com> 
>>>> wrote:
>>>> clean UI.   No accidental painting.  bigger memory footprint maybe?   
>>>> 
>>>> Randy S. Little
>>>> http://www.rslittle.com/
>>>> http://www.imdb.com/name/nm2325729/
>>>> 
>>>> 
>>>> 
>>>>> On Tue, Mar 31, 2015 at 2:21 PM, Ron Ganbar <ron...@gmail.com> wrote:
>>>>> No idea about performance, but I do love the fact that when I use the O 
>>>>> hotkey instead of the P hotkey, I can immediately start drawing a shape, 
>>>>> as the Bezier tool is on by default.
>>>>> 
>>>>> 
>>>>> 
>>>>> Ron Ganbar
>>>>> email: ron...@gmail.com
>>>>> tel: +44 (0)7968 007 309 [UK]
>>>>>      +972 (0)54 255 9765 [Israel]
>>>>> url: http://ronganbar.wordpress.com/
>>>>> 
>>>>>> On Tue, Mar 31, 2015 at 9:14 PM, Simon Björk <bjork.si...@gmail.com> 
>>>>>> wrote:
>>>>>> 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
>>>>>> 
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>>>>> 
>>>>> 
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