# Play back Stl models

**URL:** <https://discourse.slicer.org/t/play-back-stl-models/8518>\
**Category:** Support\
**Tags:** sequences\
**Created:** [September 21, 2019, 2:37pm UTC](https://discourse.slicer.org/t/play-back-stl-models/8518 "2019-09-21T14:37:42Z")\
**Posts on this page:** 13\
**Page:** 1

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**Author:** ![Jainey](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@Jainey](https://discourse.slicer.org/u/Jainey)\
**Post date:** [September 21, 2019, 2:37pm UTC](https://discourse.slicer.org/t/play-back-stl-models/8518/1 "2019-09-21T14:37:42Z")

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Hi all

I m trying to add few stl files (models) and get them to playback as in a small video clip.  
I tried the creating sequence and sequence browser modules.

I can create sequence of volumes- and get it to play back.  
But it doesn’t play back similarly with models.

Could you kindly explain what I should do,  
Thanks  
(tried creating new sequence browser for models, it doesn’t add models as expected and no play back)

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [September 21, 2019, 2:58pm UTC](https://discourse.slicer.org/t/play-back-stl-models/8518/2 "2019-09-21T14:58:52Z")

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You need to put the models Ina sequence using Sequences module and then create a sequence browser node to show them as an animation in Sequence Browser module.

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**Author:** ![Jainey](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@Jainey](https://discourse.slicer.org/u/Jainey)\
**Post date:** [September 21, 2019, 3:09pm UTC](https://discourse.slicer.org/t/play-back-stl-models/8518/3 "2019-09-21T15:09:36Z")

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Thanks Prof @lassoan

I did do the sequence  
But creating a browser was the issue.  
I select the first model as my proxy node, then I can add one model only. Even then it does not play back.

Do I have to select the new sequence in the 3 D window. ( Slice vies allows doing that but I dont know about the 3 D window)

Thanks

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**Author:** ![Jainey](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@Jainey](https://discourse.slicer.org/u/Jainey)\
**Post date:** [September 21, 2019, 3:15pm UTC](https://discourse.slicer.org/t/play-back-stl-models/8518/4 "2019-09-21T15:15:14Z")

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It shows as playing back in the browser, but nothing happens in the 3 D window

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [September 21, 2019, 3:15pm UTC](https://discourse.slicer.org/t/play-back-stl-models/8518/5 "2019-09-21T15:15:16Z")

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No need to select a proxy node, it is created for you automatically when you add your sequence node to the browser node.

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**Author:** ![Jainey](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@Jainey](https://discourse.slicer.org/u/Jainey)\
**Post date:** [September 21, 2019, 3:16pm UTC](https://discourse.slicer.org/t/play-back-stl-models/8518/6 "2019-09-21T15:16:05Z")

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> [@Jainey](#):
>
> It shows as playing back in the browser, but nothing happens in the 3 D window

It shows as playing back in the browser, but nothing happens in the 3 D window

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [September 21, 2019, 3:16pm UTC](https://discourse.slicer.org/t/play-back-stl-models/8518/7 "2019-09-21T15:16:19Z")

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> [@Jainey](#):
>
> It shows as playing back in the browser, but nothing happens in the 3 D window

Can you share a screen recording of what you did?

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**Author:** ![Jainey](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@Jainey](https://discourse.slicer.org/u/Jainey)\
**Post date:** [September 21, 2019, 3:16pm UTC](https://discourse.slicer.org/t/play-back-stl-models/8518/8 "2019-09-21T15:16:43Z")

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Yes Prof , 2 mins, Thanks

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<div class="post-metadata">

**Author:** ![Jainey](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@Jainey](https://discourse.slicer.org/u/Jainey)\
**Post date:** [September 21, 2019, 3:18pm UTC](https://discourse.slicer.org/t/play-back-stl-models/8518/9 "2019-09-21T15:18:34Z")

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Ohh I had to hide the models in the data module, and keep only the sequence open.  
Works fine; with all the models open, it does not show the play back  
Thanks ever so much for help

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [September 21, 2019, 3:24pm UTC](https://discourse.slicer.org/t/play-back-stl-models/8518/10 "2019-09-21T15:24:15Z")

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Yes, sure you need to hide or delete the original models (once you copied one in the sequence you don’t need it anymore) side they would occlude the animated model.

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**Author:** ![Jainey](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@Jainey](https://discourse.slicer.org/u/Jainey)\
**Post date:** [September 21, 2019, 3:30pm UTC](https://discourse.slicer.org/t/play-back-stl-models/8518/11 "2019-09-21T15:30:22Z")

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Thank you, One more quick question Prof. @lassoan  
How do I get two models to play back synchronously  
Thanks

(Two bones that are not overlapping)

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<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [September 21, 2019, 3:34pm UTC](https://discourse.slicer.org/t/play-back-stl-models/8518/12 "2019-09-21T15:34:57Z")

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You can achieve synchronized playback by adding multiple sequence nodes to the same browser node. That is why we went into the trouble of separating sequence nodes from sequence browser nodes.

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<div class="post-metadata">

**Author:** ![Jainey](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@Jainey](https://discourse.slicer.org/u/Jainey)\
**Post date:** [September 21, 2019, 3:58pm UTC](https://discourse.slicer.org/t/play-back-stl-models/8518/13 "2019-09-21T15:58:44Z")

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Thanks heaps Prof @lassoan