# Editor three.js : Render function no longer exists to create an MP4 file

**URL:** <https://discourse.threejs.org/t/editor-three-js-render-function-no-longer-exists-to-create-an-mp4-file/28635>\
**Category:** Questions\
**Tags:** editor\
**Created:** [August 4, 2021, 8:40am UTC](https://discourse.threejs.org/t/editor-three-js-render-function-no-longer-exists-to-create-an-mp4-file/28635 "2021-08-04T08:40:04Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Manou](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/manou/32/19896_2.png) [@Manou](https://discourse.threejs.org/u/Manou)\
**Post date:** [August 4, 2021, 8:40am UTC](https://discourse.threejs.org/t/editor-three-js-render-function-no-longer-exists-to-create-an-mp4-file/28635/1 "2021-08-04T08:40:05Z")

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Hello,  
since 2 days, Render function no longer exists in Editor three.js ( project section),  
at the end of the realization, I used it to create an MP4 file.  
is it a Bug or do I have to do something else to create it?  
knowing that I only use Editor via firefox and chrome  
Thanks

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**Author:** ![Mugen87](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/mugen87/32/5645_2.png) [@Mugen87](https://discourse.threejs.org/u/Mugen87)\
**Post date:** [August 4, 2021, 8:44am UTC](https://discourse.threejs.org/t/editor-three-js-render-function-no-longer-exists-to-create-an-mp4-file/28635/2 "2021-08-04T08:44:13Z")

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As mentioned in [Why FFMPEG is used? - #2 by Mugen87](https://discourse.threejs.org/t/why-ffmpeg-is-used/28556/2), the browser has to support `SharedArrayBuffer`. It’s possible that a browser update removed the support for security reasons.

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<div class="post-metadata">

**Author:** ![Manou](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/manou/32/19896_2.png) [@Manou](https://discourse.threejs.org/u/Manou)\
**Post date:** [August 4, 2021, 9:00am UTC](https://discourse.threejs.org/t/editor-three-js-render-function-no-longer-exists-to-create-an-mp4-file/28635/3 "2021-08-04T09:00:10Z")

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it’s strange, same problem on MacBook Pro - Apple

I find that the editor is very well done and I am not a programmer  
do you know how to update the browser or some other solution to create MP4 when the Json is published ?  
thanks