# Importing roto in Mocha Pro

**URL:** <https://forum.logik.tv/t/importing-roto-in-mocha-pro/7683>\
**Category:** Flame Questions\
**Tags:** mocha\
**Created:** [February 9, 2023, 9:44am UTC](https://forum.logik.tv/t/importing-roto-in-mocha-pro/7683 "2023-02-09T09:44:27Z")\
**Posts on this page:** 12\
**Page:** 1

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**Author:** ![grantconnor](https://avatars.discourse-cdn.com/v4/letter/g/bc79bd/32.png) [@grantconnor](https://forum.logik.tv/u/grantconnor)\
**Post date:** [February 9, 2023, 9:44am UTC](https://forum.logik.tv/t/importing-roto-in-mocha-pro/7683/1 "2023-02-09T09:44:27Z")

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Does anyone know how to import some roto that’s already been done in say a gmask, in Mocha Pro as a holdout matte for tracking? I know you can import a rendered clip of roto, but wondered if it can all be kept within batch without having to render out the roto as a clip first?

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**Author:** ![MLandon](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@MLandon](https://forum.logik.tv/u/MLandon)\
**Post date:** [February 9, 2023, 6:06pm UTC](https://forum.logik.tv/t/importing-roto-in-mocha-pro/7683/2 "2023-02-09T18:06:22Z")

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Export the “shape” in Mocha using the “Flame Tracer (Shape +Axis)” selected. You’ll get a Gmask Tracer setup you can load that will have all your splines and tracked axis. If you built the Mocha layers with B-splines, you’ll have the EXACT same splines in Flame. If you used X-splines, you’ll see many more control points on the Gmask due to the differences in the maths converting X to B splines.

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**Author:** ![cnoellert](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/cnoellert/32/559_2.png) [@cnoellert](https://forum.logik.tv/u/cnoellert)\
**Post date:** [February 9, 2023, 6:34pm UTC](https://forum.logik.tv/t/importing-roto-in-mocha-pro/7683/3 "2023-02-09T18:34:39Z")

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Pretty sure the last time I tried to figure it out the answer was no. Makes a certain amount of sense… why import from another package when you can start it all in mocha from the get go.

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**Author:** ![grantconnor](https://avatars.discourse-cdn.com/v4/letter/g/bc79bd/32.png) [@grantconnor](https://forum.logik.tv/u/grantconnor)\
**Post date:** [February 9, 2023, 6:38pm UTC](https://forum.logik.tv/t/importing-roto-in-mocha-pro/7683/4 "2023-02-09T18:38:27Z")

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Hi there… I think you’re answering the problem the other way around. I want to import an alpha to use in Mocha, not export to use in the Gmask.

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**Author:** ![grantconnor](https://avatars.discourse-cdn.com/v4/letter/g/bc79bd/32.png) [@grantconnor](https://forum.logik.tv/u/grantconnor)\
**Post date:** [February 9, 2023, 6:43pm UTC](https://forum.logik.tv/t/importing-roto-in-mocha-pro/7683/5 "2023-02-09T18:43:30Z")

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Yep… seems a shame thought that you can’t feed a rendered alpha clip or a gmask in one of the inputs on the Mocha node.

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**Author:** ![cnoellert](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/cnoellert/32/559_2.png) [@cnoellert](https://forum.logik.tv/u/cnoellert)\
**Post date:** [February 9, 2023, 6:50pm UTC](https://forum.logik.tv/t/importing-roto-in-mocha-pro/7683/6 "2023-02-09T18:50:12Z")

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Full disclosure though I was using Mocha Stand-alone. The OpenFX may use the matte input, but I’d imagine if you’re asking here you’ve already tried that.

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**Author:** ![grantconnor](https://avatars.discourse-cdn.com/v4/letter/g/bc79bd/32.png) [@grantconnor](https://forum.logik.tv/u/grantconnor)\
**Post date:** [February 9, 2023, 7:45pm UTC](https://forum.logik.tv/t/importing-roto-in-mocha-pro/7683/7 "2023-02-09T19:45:57Z")

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Yeah you would think that would work… Maybe it does, but I’ve not found a way yet!

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**Author:** ![ace\_elliott](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/ace_elliott/32/14664_2.png) [@ace\_elliott](https://forum.logik.tv/u/ace_elliott)\
**Post date:** [February 9, 2023, 7:55pm UTC](https://forum.logik.tv/t/importing-roto-in-mocha-pro/7683/8 "2023-02-09T19:55:27Z")

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> [@grantconnor](#):
>
> Does anyone know how to import some roto that’s already been done in say a gmask, in Mocha Pro as a holdout matte for tracking? I know you can import a rendered clip of roto, but wondered if it can all be kept within batch without having to render out the roto as a clip first?

@Brattesani Is AMAZING with Mocha…maybe give him a shout!?

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**Author:** ![grantconnor](https://avatars.discourse-cdn.com/v4/letter/g/bc79bd/32.png) [@grantconnor](https://forum.logik.tv/u/grantconnor)\
**Post date:** [February 9, 2023, 7:57pm UTC](https://forum.logik.tv/t/importing-roto-in-mocha-pro/7683/9 "2023-02-09T19:57:05Z")

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Thank you, I will.

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**Author:** ![Brattesani](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/brattesani/32/536_2.png) [@Brattesani](https://forum.logik.tv/u/Brattesani)\
**Post date:** [February 9, 2023, 8:45pm UTC](https://forum.logik.tv/t/importing-roto-in-mocha-pro/7683/10 "2023-02-09T20:45:45Z")

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Hello Grant -  
It can be done, but kinda wanky. You need to export the Roto as a Jpg sequence and then re-import it into the desired Mocha Insert layer.  
At this point, It will respect pre rendered matte as an occlusion.  
Then start your Mocha track.

OFX matte layer input will not do the trick.

Best -

Joey Brattesani  
Flame Artist  
BRATT FX INC  
310-490-7262

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**Author:** ![cnoellert](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/cnoellert/32/559_2.png) [@cnoellert](https://forum.logik.tv/u/cnoellert)\
**Post date:** [February 9, 2023, 8:54pm UTC](https://forum.logik.tv/t/importing-roto-in-mocha-pro/7683/11 "2023-02-09T20:54:27Z")

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Hey @Brattesani, @grantconnor was trying to see if there was a way other than pre-rendering and exporting a sequence. Sounds like there’s not.

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**Author:** ![grantconnor](https://avatars.discourse-cdn.com/v4/letter/g/bc79bd/32.png) [@grantconnor](https://forum.logik.tv/u/grantconnor)\
**Post date:** [February 9, 2023, 9:17pm UTC](https://forum.logik.tv/t/importing-roto-in-mocha-pro/7683/12 "2023-02-09T21:17:50Z")

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Yeah that’s the way I learnt from the video tutorial, just wondered if I could feed a gmask or clip straight from batch instead, but there doesn’t seem to be unfortunately! Thanks anyway.
