# Render with alpha broken in 4.21 ???

**URL:** <https://forums.unrealengine.com/t/render-with-alpha-broken-in-4-21/437528>\
**Category:** Rendering\
**Tags:** rendering-system, export, unreal-engine, Rendering, question\
**Created:** [November 13, 2018, 5:08am UTC](https://forums.unrealengine.com/t/render-with-alpha-broken-in-4-21/437528 "2018-11-13T05:08:42Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Arcane](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Arcane](https://forums.unrealengine.com/u/Arcane)\
**Post date:** [November 13, 2018, 5:08am UTC](https://forums.unrealengine.com/t/render-with-alpha-broken-in-4-21/437528/1 "2018-11-13T05:08:42Z")

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I know I have rendered with an alpha channel before but that was like 4.17 now i cannot seem to get it to work.  
opacity does not render the alpha , sep translucency alpha isnt it - How is it not available to render out to alpha when there are all those render pass choices !

this is the opacity layer which makes absolutely no sense - its not rendering all that black lines and hair . It Should be solid white - her skin isnt opaque -

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**Author:** ![KimLaughton](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/kimlaughton/32/979013_2.png) [@KimLaughton](https://forums.unrealengine.com/u/KimLaughton)\
**Post date:** [November 13, 2018, 12:54pm UTC](https://forums.unrealengine.com/t/render-with-alpha-broken-in-4-21/437528/2 "2018-11-13T12:54:56Z")

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Having the same issue - it feels like being able to render with alpha would be very useful! At the moment using a green background and getting quite good results with keying in premiere but that means no screen space reflections.

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**Author:** ![Arcane](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Arcane](https://forums.unrealengine.com/u/Arcane)\
**Post date:** [November 13, 2018, 5:56pm UTC](https://forums.unrealengine.com/t/render-with-alpha-broken-in-4-21/437528/3 "2018-11-13T17:56:44Z")

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So ridiculous - seems like you have to use a combination of passes to finagle an alpha - so absurd when exr has an alpha compnent but for some reason unreal chose not to implement . its the most needed componet of a render but you probably gotta use several different things to fake it . I saw you can add a stencil something in the material and that will generate something then probably combine with transluency and opacity or use the normal map as its pretty solid - gotta test out now

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**Author:** ![anonymous\_user\_acf6231b](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_acf6231b](https://forums.unrealengine.com/u/anonymous_user_acf6231b)\
**Post date:** [November 28, 2018, 6:04pm UTC](https://forums.unrealengine.com/t/render-with-alpha-broken-in-4-21/437528/4 "2018-11-28T18:04:07Z")

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I think having an alpha channel on your renders or embedded on a PNG file is still not possible in UE4. What I been doing if I need a separated object is just use a green/blue screen method.

We super need an alpha channel implementation especially for those who use the sequencer to render.

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**Author:** ![anonymous\_user\_805f48991](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_805f48991](https://forums.unrealengine.com/u/anonymous_user_805f48991)\
**Post date:** [February 13, 2019, 12:04pm UTC](https://forums.unrealengine.com/t/render-with-alpha-broken-in-4-21/437528/5 "2019-02-13T12:04:31Z")

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This is the first time I’ve looked into this. I am rendering panoramic images of my environment and want to have the animated objects exported separately as png sequences on a transparent background (rendered with the same lens as the same panoramic camera). I thought this would take 2 minutes to implement. I’ve spent 16 hours researching this and have no plan. I can’t believe transparency/alpha is not supported in exported pngs by Unreal - in 2019 ??

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**Author:** ![bbowman](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@bbowman](https://forums.unrealengine.com/u/bbowman)\
**Post date:** [February 22, 2019, 8:28pm UTC](https://forums.unrealengine.com/t/render-with-alpha-broken-in-4-21/437528/6 "2019-02-22T20:28:11Z")

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If we can get alpha working out of sequencer, this will replace my standard renderer. Please provide solution.