# Visibility Track

**URL:** <https://forums.chaos.com/t/visibility-track/146010>\
**Category:** Issues\
**Created:** [December 9, 2019, 2:54pm UTC](https://forums.chaos.com/t/visibility-track/146010 "2019-12-09T14:54:44Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![SHORT\_CUTS](https://avatars.discourse-cdn.com/v4/letter/s/76d3ee/32.png) [@SHORT\_CUTS](https://forums.chaos.com/u/SHORT_CUTS)\
**Post date:** [December 9, 2019, 2:54pm UTC](https://forums.chaos.com/t/visibility-track/146010/1 "2019-12-09T14:54:44Z")

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Hello,  
is it a known problem that somehow corona doenst take the visibility track into account? I have an object which visibilty is animated, basically its set to 0 most of the time and then jumps to 1 in one frame. The problem is that the object is still visibile the whole time its set to 0…  
Found a similar problem which was solved unfortunatly it had something to do with SSS and transculency which i dont use (index.php?topic=21309), its a rather simple material.

material of the object: [Screenshot by Lightshot](http://prntscr.com/q8cw3a)

screengrab of the curve editor and IR: [Screenshot by Lightshot](http://prntscr.com/q8cthf)

any pointers whats wrong?

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**Author:** ![SHORT\_CUTS](https://avatars.discourse-cdn.com/v4/letter/s/76d3ee/32.png) [@SHORT\_CUTS](https://forums.chaos.com/u/SHORT_CUTS)\
**Post date:** [December 9, 2019, 3:16pm UTC](https://forums.chaos.com/t/visibility-track/146010/2 "2019-12-09T15:16:08Z")

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Found the problem…tried a simple object with the same material and it was working so it must have been something with the animated object. It was animated using a path deform using the stretch value and while it was set to 0 the object was still visible, setting it to 0.001 fixed it and the visibility track is now working as expected.

So dont use a value of 0 if you want to animate the visibility…

Sorry for the inital post, you can delete this whole thread if you want.

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**Author:** ![maru](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/maru/32/15975_2.png) [@maru](https://forums.chaos.com/u/maru)\
**Post date:** [December 11, 2019, 1:49pm UTC](https://forums.chaos.com/t/visibility-track/146010/3 "2019-12-11T13:49:24Z")

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I’ll just move it to resolved in case someone else has this problem.  
It doesn’t seem to be Corona-related, does it?

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<div class="post-metadata">

**Author:** ![SHORT\_CUTS](https://avatars.discourse-cdn.com/v4/letter/s/76d3ee/32.png) [@SHORT\_CUTS](https://forums.chaos.com/u/SHORT_CUTS)\
**Post date:** [December 13, 2019, 9:55am UTC](https://forums.chaos.com/t/visibility-track/146010/4 "2019-12-13T09:55:46Z")

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Doesnt happen with vray so i would guess it has something to do with corona.

corona: [Screenshot by Lightshot](http://prntscr.com/qa9nfn)  
vray: [Screenshot by Lightshot](http://prntscr.com/qa9ntt)