# \#opacity **URL:** https://forums.unrealengine.com/tag/opacity/3691.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Can I render a video with transparency in UE?](https://forums.unrealengine.com/t/can-i-render-a-video-with-transparency-in-ue/393640)
**Author:** [@Slavq](https://forums.unrealengine.com/u/Slavq)\ **Replies:** 7\ **Last updated:** [September 3, 2026, 10:49am UTC](https://forums.unrealengine.com/t/can-i-render-a-video-with-transparency-in-ue/393640 "2026-09-03T10:49:45Z")
For example, let’s say that I want to record a turntable of a 3D model in UE, then use the clip on top of some background in video editing app. Is it even possible?.. Maybe from Sequencer with some custom depth info? --- ## [Can you animate the opacity of widgets?](https://forums.unrealengine.com/t/can-you-animate-the-opacity-of-widgets/299383)
**Author:** [@fanzypantz](https://forums.unrealengine.com/u/fanzypantz)\ **Replies:** 24\ **Last updated:** [June 7, 2026, 7:42pm UTC](https://forums.unrealengine.com/t/can-you-animate-the-opacity-of-widgets/299383 "2026-06-07T19:42:11Z")
I am experimenting with UMG and I want to have everything on-screen animate with a fade in that currently is a pure black rectangle controlled by a timeline in the HUD blueprint. But it seem like UMG gets layered on top … --- ## [Setting opacity of Opaque Material](https://forums.unrealengine.com/t/setting-opacity-of-opaque-material/446165)
**Author:** [@OniricMaster](https://forums.unrealengine.com/u/OniricMaster)\ **Replies:** 4\ **Last updated:** [May 20, 2026, 1:11pm UTC](https://forums.unrealengine.com/t/setting-opacity-of-opaque-material/446165 "2026-05-20T13:11:48Z")
Hello, I made a simple blueprint that reduces the opacity of a material if the player is standing in front, this worked fine but now that i’m implementing assets that already have materials I have arrived at a problem. … --- ## [Switching Between Clear/Blur on Glass Material. Best Way to Adjust Opacity Independently?](https://forums.unrealengine.com/t/switching-between-clear-blur-on-glass-material-best-way-to-adjust-opacity-independently/2699956)
**Author:** [@ELEV-Trav](https://forums.unrealengine.com/u/ELEV-Trav)\ **Replies:** 0\ **Last updated:** [February 15, 2026, 9:19pm UTC](https://forums.unrealengine.com/t/switching-between-clear-blur-on-glass-material-best-way-to-adjust-opacity-independently/2699956 "2026-02-15T21:19:13Z")
Hi All, I’m trying to create a base glass material to cover most of my material instance uses. Been following several different tutorials and trying to blend things I’ve learned. For instance, in Pwnisher’s material v… --- ## [Fake thickness / opacity material - Help](https://forums.unrealengine.com/t/fake-thickness-opacity-material-help/433132)
**Author:** [@LyubomirIko](https://forums.unrealengine.com/u/LyubomirIko)\ **Replies:** 1\ **Last updated:** [August 19, 2025, 11:27pm UTC](https://forums.unrealengine.com/t/fake-thickness-opacity-material-help/433132 "2025-08-19T23:27:07Z")
Hello. I need to make fake thickness on opacity masked material (some sort of fence) I use Bump offset - but I have problems of stacking the bump offset-s+opacity - Very messy results :-/ Can someone show me how to st… --- ## [Mediaplate opacity slider simple blueprint](https://forums.unrealengine.com/t/mediaplate-opacity-slider-simple-blueprint/2400945)
**Author:** [@chuangzu](https://forums.unrealengine.com/u/chuangzu)\ **Replies:** 1\ **Last updated:** [March 19, 2025, 4:25pm UTC](https://forums.unrealengine.com/t/mediaplate-opacity-slider-simple-blueprint/2400945 "2025-03-19T16:25:20Z")
I wish to add an opacity slider to the Mediaplate video player using a simple Blueprint, and I’m wondering what is the best practice and the simplest way to do it? I am primarily an artist and I’m just learning how to d… --- ## [Can't get FBX model's textures from Fab to display right with translucent/opaque settings](https://forums.unrealengine.com/t/cant-get-fbx-models-textures-from-fab-to-display-right-with-translucent-opaque-settings/2158786)
**Author:** [@ClassyAlpaca](https://forums.unrealengine.com/u/ClassyAlpaca)\ **Replies:** 0\ **Last updated:** [November 29, 2024, 10:20pm UTC](https://forums.unrealengine.com/t/cant-get-fbx-models-textures-from-fab-to-display-right-with-translucent-opaque-settings/2158786 "2024-11-29T22:20:28Z")
Dear Unreal Community, I’m new to working with textures and I have been having issues with a model I got from Fab, which I can’t get to display properly inside Unreal Engine. The FBX model imports without any issues, b… --- ## [PNG transparency](https://forums.unrealengine.com/t/png-transparency/2120575)
**Author:** [@raith0818](https://forums.unrealengine.com/u/raith0818)\ **Replies:** 0\ **Last updated:** [November 13, 2024, 6:02pm UTC](https://forums.unrealengine.com/t/png-transparency/2120575 "2024-11-13T18:02:10Z")
Summary Been having a hard time trying to find out if I’m doing something wrong, but does the FAB 3d viewer not support PNG alpha for transparency? When I try to use the color PNG as the file for transparency, it makes t… --- ## [Change opacity of flipbook](https://forums.unrealengine.com/t/change-opacity-of-flipbook/295936)
**Author:** [@anonymous\_user\_21a58d97](https://forums.unrealengine.com/u/anonymous_user_21a58d97)\ **Replies:** 10\ **Last updated:** [November 13, 2024, 1:28pm UTC](https://forums.unrealengine.com/t/change-opacity-of-flipbook/295936 "2024-11-13T13:28:01Z")
Hello everyone, I am trying to create a flashing effect to my character flipbook when he is hit. Is there a way to change Alpha real time for paperFlipbooks? Thank you. --- ## [How can I change the visibility or opacity of a widget using blueprints.](https://forums.unrealengine.com/t/how-can-i-change-the-visibility-or-opacity-of-a-widget-using-blueprints/2039448)
**Author:** [@Guydzak1](https://forums.unrealengine.com/u/Guydzak1)\ **Replies:** 1\ **Last updated:** [September 26, 2024, 1:55pm UTC](https://forums.unrealengine.com/t/how-can-i-change-the-visibility-or-opacity-of-a-widget-using-blueprints/2039448 "2024-09-26T13:55:40Z")
In my first-person game, I’m currently using a line trace so that the player can pick up objects in the scene. I’ve also got a widget that acts as a crosshair for picking up objects. Next, I would like to use a line trac… --- ## [\[Help\] Sampling a virtual textures is currently not supported when connected to the Opacity Mask material attribute](https://forums.unrealengine.com/t/help-sampling-a-virtual-textures-is-currently-not-supported-when-connected-to-the-opacity-mask-material-attribute/473719)
**Author:** [@TWCOAO](https://forums.unrealengine.com/u/TWCOAO)\ **Replies:** 7\ **Last updated:** [August 12, 2024, 11:29am UTC](https://forums.unrealengine.com/t/help-sampling-a-virtual-textures-is-currently-not-supported-when-connected-to-the-opacity-mask-material-attribute/473719 "2024-08-12T11:29:48Z")
Hi, Im new in UE4, have a big problem while I connected to opacity channel, log showed up error message: ^^\[SM5\] Sampling a virtual textures is currently not supported when connected to the Opacity Mask material attr… --- ## [Why is my Masked Material Not Casting Shadows?](https://forums.unrealengine.com/t/why-is-my-masked-material-not-casting-shadows/285028)
**Author:** [@Knobbynobbes](https://forums.unrealengine.com/u/Knobbynobbes)\ **Replies:** 8\ **Last updated:** [July 25, 2024, 12:23pm UTC](https://forums.unrealengine.com/t/why-is-my-masked-material-not-casting-shadows/285028 "2024-07-25T12:23:02Z")
So, I just followed the tutorial on how to do location based opacity in UE4 and I noticed that none of the objects that are masked are creating shadows. The sides of brushes that do not have the material on them cast sha… --- ## [Need Help with animating a mesh's opacity ](https://forums.unrealengine.com/t/need-help-with-animating-a-meshs-opacity/1863815)
**Author:** [@PastaDash9945](https://forums.unrealengine.com/u/PastaDash9945)\ **Replies:** 1\ **Last updated:** [May 19, 2024, 9:06pm UTC](https://forums.unrealengine.com/t/need-help-with-animating-a-meshs-opacity/1863815 "2024-05-19T21:06:05Z")
I’m a student and I’m incredibly new to using Unreal, but I want to animate a mesh’s opacity so that it fades in and out of view. It currently has a texture applied to the material connected through the opacity channel (… --- ## [Blend Mode Masked and high distance](https://forums.unrealengine.com/t/blend-mode-masked-and-high-distance/303169)
**Author:** [@nkey](https://forums.unrealengine.com/u/nkey)\ **Replies:** 3\ **Last updated:** [February 18, 2024, 9:17pm UTC](https://forums.unrealengine.com/t/blend-mode-masked-and-high-distance/303169 "2024-02-18T21:17:58Z")
Hello everyone. In my project prototype it is required to render grass without any culling by distance (so, it should be visible even from few kilometers). UE4 4.7.0 Preview allows me to place such grass amount as I’d … --- ## [How to make object as a light source with translucent/additive blend mode?](https://forums.unrealengine.com/t/how-to-make-object-as-a-light-source-with-translucent-additive-blend-mode/1665404)
**Author:** [@SkiezLine](https://forums.unrealengine.com/u/SkiezLine)\ **Replies:** 0\ **Last updated:** [February 4, 2024, 2:21pm UTC](https://forums.unrealengine.com/t/how-to-make-object-as-a-light-source-with-translucent-additive-blend-mode/1665404 "2024-02-04T14:21:29Z")
Hello, This is my 2nd week of using UE5, and as my first practice project I’m trying to do a re-creation of Porter Robinson’s dullscythe’s MV where it plays around with a lot of environmental lighting. The MV was also m… --- ## [Unreal 5 Material Runtime Opacity problem with Shadows](https://forums.unrealengine.com/t/unreal-5-material-runtime-opacity-problem-with-shadows/1388474)
**Author:** [@BlackFlicka](https://forums.unrealengine.com/u/BlackFlicka)\ **Replies:** 3\ **Last updated:** [November 15, 2023, 7:00pm UTC](https://forums.unrealengine.com/t/unreal-5-material-runtime-opacity-problem-with-shadows/1388474 "2023-11-15T19:00:37Z")
Hello ! So I made a simple test level where I just change the opacity of some object material with a press of a button. But when the object disappears, its shadow stays on the level until I turn the camera around. When … --- ## [Normal Plus Opacity](https://forums.unrealengine.com/t/normal-plus-opacity/407463)
**Author:** [@anonymous\_user\_6ee703af](https://forums.unrealengine.com/u/anonymous_user_6ee703af)\ **Replies:** 4\ **Last updated:** [September 1, 2023, 7:45am UTC](https://forums.unrealengine.com/t/normal-plus-opacity/407463 "2023-09-01T07:45:54Z")
I was told that my glass map should be plugged into opacity into the material slot with my texture, but enabling opacity turns off normal map and messing with the transparency options has inverted my map to the point whe… --- ## [Translucency Clipping Problem with Opaque Objects](https://forums.unrealengine.com/t/translucency-clipping-problem-with-opaque-objects/295773)
**Author:** [@ue24acct](https://forums.unrealengine.com/u/ue24acct)\ **Replies:** 15\ **Last updated:** [August 3, 2023, 2:49pm UTC](https://forums.unrealengine.com/t/translucency-clipping-problem-with-opaque-objects/295773 "2023-08-03T14:49:11Z")
We’re having a problem with the material opacity blend mode. In this simple test case, the opacity node is set to 1.0, so the material should be fully opaque, yet it appears partially transparent. My guess is some z-buff… --- ## [\[FEATURE REQUEST\] Virtual Texture with Opacity map and Displacement (UDIMs problem)](https://forums.unrealengine.com/t/feature-request-virtual-texture-with-opacity-map-and-displacement-udims-problem/599955)
**Author:** [@DorianaRD](https://forums.unrealengine.com/u/DorianaRD)\ **Replies:** 2\ **Last updated:** [July 11, 2023, 1:42am UTC](https://forums.unrealengine.com/t/feature-request-virtual-texture-with-opacity-map-and-displacement-udims-problem/599955 "2023-07-11T01:42:25Z")
Hi, For UDIMs workflows there are a lot of limitation in Unreal. Opacity does not support Virtual Textures and therefore UDIMs, so if you have UDIMs you cannot have a proper opacity mask for it; which is a massive limit… --- ## [Opacity mask doesn\`t update in sequencer](https://forums.unrealengine.com/t/opacity-mask-doesn-t-update-in-sequencer/460883)
**Author:** [@anonymous\_user\_0f7c6e7d](https://forums.unrealengine.com/u/anonymous_user_0f7c6e7d)\ **Replies:** 5\ **Last updated:** [July 5, 2023, 6:36pm UTC](https://forums.unrealengine.com/t/opacity-mask-doesn-t-update-in-sequencer/460883 "2023-07-05T18:36:47Z")
Hi, everyone! I have an actor object(B) which moves through the plane(A). Plane\`s material has opacity mask which updates by movment of object(B) and makes transperent it behind the object(B). It works fine when Im mov… --- ## [Arrow Component Color Opactiy doesn't do anything](https://forums.unrealengine.com/t/arrow-component-color-opactiy-doesnt-do-anything/837865)
**Author:** [@Maderschaden](https://forums.unrealengine.com/u/Maderschaden)\ **Replies:** 4\ **Last updated:** [June 29, 2023, 3:18am UTC](https://forums.unrealengine.com/t/arrow-component-color-opactiy-doesnt-do-anything/837865 "2023-06-29T03:18:08Z")
Hi everyone. The Arrow Component has a color attribute. Unfortunately for me the opacity value has no effect whatsoever. Does anybody have an idea why that is? Is this a bug maybe? I would really like to being able to c… --- ## [Can i render out a shadow cast from invisible object. Render out on alpha channel](https://forums.unrealengine.com/t/can-i-render-out-a-shadow-cast-from-invisible-object-render-out-on-alpha-channel/478116)
**Author:** [@armondtanz](https://forums.unrealengine.com/u/armondtanz)\ **Replies:** 4\ **Last updated:** [May 30, 2023, 7:30am UTC](https://forums.unrealengine.com/t/can-i-render-out-a-shadow-cast-from-invisible-object-render-out-on-alpha-channel/478116 "2023-05-30T07:30:01Z")
So 1:if i wanted to have a figure walking and cast a shadow. 2:Hide the figure but still have the shadow 3:have the shadow on an alpha layer… 4: render out just the shadow? Is this possible? I think this would work… --- ## [Dynamic Material Opactiy Parameter not working (but only for certain colors)](https://forums.unrealengine.com/t/dynamic-material-opactiy-parameter-not-working-but-only-for-certain-colors/960473)
**Author:** [@Maderschaden](https://forums.unrealengine.com/u/Maderschaden)\ **Replies:** 0\ **Last updated:** [April 14, 2023, 4:13pm UTC](https://forums.unrealengine.com/t/dynamic-material-opactiy-parameter-not-working-but-only-for-certain-colors/960473 "2023-04-14T16:13:49Z")
Hi everyone, I have this very basic material setup with two parameters, color and opacity. Now if I set these parameters in a dynamic material, the opacity works, but only when the color “is actually a color” (w… --- ## [3D Widget: Opacity and mipmapping](https://forums.unrealengine.com/t/3d-widget-opacity-and-mipmapping/350419)
**Author:** [@anonymous\_user\_44b157d0](https://forums.unrealengine.com/u/anonymous_user_44b157d0)\ **Replies:** 6\ **Last updated:** [March 12, 2023, 7:55pm UTC](https://forums.unrealengine.com/t/3d-widget-opacity-and-mipmapping/350419 "2023-03-12T19:55:51Z")
Wondering about two different things, but I wanted to just post them as one question to see if anybody can help me out :slight\_smile: So, the first question is about 3D widgets’ opacity value. Right now it doesn’t seem … --- ## [Shading Model - Cloth, Opacity Not Work](https://forums.unrealengine.com/t/shading-model-cloth-opacity-not-work/404538)
**Author:** [@StailMagnus](https://forums.unrealengine.com/u/StailMagnus)\ **Replies:** 7\ **Last updated:** [February 15, 2023, 10:11pm UTC](https://forums.unrealengine.com/t/shading-model-cloth-opacity-not-work/404538 "2023-02-15T22:11:02Z")
Hi. Sorry for the my little English. I try to make Cloth material. Shading model has Opacity and Opacity Mask. Therefore i want to use Opacity, but for me something work wrong. See below screenshot. Light Pink parts mu… --- ## [Alpha not transferring as opacity while using Houdini Engine](https://forums.unrealengine.com/t/alpha-not-transferring-as-opacity-while-using-houdini-engine/754415)
**Author:** [@SavageVFX](https://forums.unrealengine.com/u/SavageVFX)\ **Replies:** 0\ **Last updated:** [January 21, 2023, 10:40pm UTC](https://forums.unrealengine.com/t/alpha-not-transferring-as-opacity-while-using-houdini-engine/754415 "2023-01-21T22:40:44Z")
Hello! I’ve been playing around with the Houdini Engine for Unreal and I really like it! One issue that I’m currently having, however, is that when I store the Alpha attribute (on points, vertices, or primitives), this … --- ## [Multiple trasparent objects appearing in wrong order](https://forums.unrealengine.com/t/multiple-trasparent-objects-appearing-in-wrong-order/481690)
**Author:** [@Catchetify](https://forums.unrealengine.com/u/Catchetify)\ **Replies:** 2\ **Last updated:** [November 3, 2022, 4:43pm UTC](https://forums.unrealengine.com/t/multiple-trasparent-objects-appearing-in-wrong-order/481690 "2022-11-03T16:43:54Z")
I am having an issue with transparent objects that are behind another transparent object will sometimes render in front of the other even though they are placed behind it. For example liquid in a glass cup will sometimes… --- ## [Distance to opacity curve not working](https://forums.unrealengine.com/t/distance-to-opacity-curve-not-working/375665)
**Author:** [@kornel.l.varga](https://forums.unrealengine.com/u/kornel.l.varga)\ **Replies:** 6\ **Last updated:** [July 9, 2022, 12:49am UTC](https://forums.unrealengine.com/t/distance-to-opacity-curve-not-working/375665 "2022-07-09T00:49:17Z")
I am trying to use a MaterialBillboard within my Pawn. I have created two float curves, one for the Opacity and the other one for Size. The size curve works perfectly, while the opacity reacts to nothing. I have tried s… --- ## [How to set overall opacity for a particle system?](https://forums.unrealengine.com/t/how-to-set-overall-opacity-for-a-particle-system/295454)
**Author:** [@theonecalledtom](https://forums.unrealengine.com/u/theonecalledtom)\ **Replies:** 3\ **Last updated:** [February 3, 2022, 2:01am UTC](https://forums.unrealengine.com/t/how-to-set-overall-opacity-for-a-particle-system/295454 "2022-02-03T02:01:30Z")
Hi There, I have a particle system that fades particles in and out during their lifetime using the particle editor. I would like to scale the overall opacity of the system, so that I can fade it in and out as a whole. R… --- ## [Why is this translucent material not opaque, if opacity = 1?](https://forums.unrealengine.com/t/why-is-this-translucent-material-not-opaque-if-opacity-1/286542)
**Author:** [@Ixiguis](https://forums.unrealengine.com/u/Ixiguis)\ **Replies:** 8\ **Last updated:** [February 2, 2022, 4:14pm UTC](https://forums.unrealengine.com/t/why-is-this-translucent-material-not-opaque-if-opacity-1/286542 "2022-02-02T16:14:22Z")
I can still see behind it, even though it should be fully opaque (Opacity == 1). Why? I am trying to create a material that is partly opaque and partly translucent (opacity controlled by a texture). But it’s never fu… [Next page](https://forums.unrealengine.com/tag/opacity/3691.md?match_all_tags=true&page=1&tags%5B%5D=opacity)