How To Expose A Variable To The Master Sequencer In Unreal Engine

[@texasjakit]

took me so long to figure this out. THANK YOU!

[@mateosanzpedemonte7342]

Such a great tutorial!

[@ORTyOW]

4:05 0_0 THAT CHANGED MY LIFE! THANK YOU

[@Andropex]

That second checkbox in class settings... god damn it...

[@FRACTUREDVISIONmusic]

My lord - there is SO much more help with Unreal popping up all over - than ever before. Recalling the days of UDK, when finding help was like fishing an unstocked pond - thank you for sharing your knowledge! It's a great time to be an Unreal Engine creative.

[@joedickenson3d]

Yeh it’s getting great for unreal now 😊

[@MantisDing]

thank you so much~ this is the answer I am looking for. by the way, fall in love with your voice~~😆

[@joedickenson3d]

Glad it helped 😀 and thanks glad you like my voice! Never had a comment like this 😂

[@hardcorerick8514]

Such a cool trick! Opens up so much

[@Suthriel]

Awesome video, it was very helpful :)

[@joedickenson3d]

Great glad I could help Suthriel!

[@zhixoworld]

THANK YOU SO MUUUUUUCH, been looking for this for long. Most tutorials are about triggering an event to make the blueprint start in the sequencer which this is mostly for game dev. But it's kinda not a good way for those who doing cinematics and visuals when you want to full control your parameters in sequencer. I wonder if I can make all parameters in blueprints to change in sequencer for example other blueprints made by other artists or the UE blueprints with animations in them. again thank you. 🌸💜🙏

[@joedickenson3d]

Your very welcome :) I would imagine you need to expose your parameters in the blueprint, Then drag the blueprint into the viewport and with it selected you should then be able to see it in the Sequencer. Once your applied it to the sequencer I think it will then allow you to edit the exposed parameters

[@sams_3d_stuff]

Thanks! I was missing run construction script in sequencer. Thanks!

[@joedickenson3d]

Glad it helped!

[@antoniopepe]

MAAAAAANNNNN... saves me from scrathing my head over the desk :D

[@unrealengineruseng9583]

THANK YOU MAN !

[@joedickenson3d]

You're welcome!

[@humanoid9787]

Thank you!

[@joedickenson3d]

No problem!

[@marvluebke]

4:03 this is what I was missing... Already had the variable exposed in cinematics, but theres always one more hidden checkbox with unreal

[@philippzakrzewski8180]

Thanks so much, you're a lifesaver! Not setting a tick for "Run construction script in sequencer" was my issue as well. However, while everything animates nicely in the editor when playing the sequence, the animation for my blueprint actors isn't applied when I export (via the Movie Render Queue). Any idea why this could be happening? Thanks a lot in advance :-)

[@joedickenson3d]

I would assume you would need to somehow call that blueprint actor into the sequencer. I think if you select the blueprint actor in the viewport then go into the sequencer and over the left where the cameras etc appear right click and the top selection should have your blueprint in. I think if you call that in it should work

[@ORTyOW]

@@joedickenson3d what?... I didn't get it where should I click? I have my BP actor in Level Sequencer under Camera Cuts, where should I click?

[@Raven_Renders]

Did you ever find a fix for it playing fine in sequencer but not rendering? that's the exact problem I'm having and its been driving me mad for days!!

[@philippzakrzewski8180]

@@Raven_Renders I’ve got a very long post about that on the Unreal Forum. The short answer is that it isn’t possible, because the Movie Render Queue (or anything happening inside Sequencer) assumes that you are in Game Mode when exporting and any keyframed Blueprint asset animation is unfortunately ignored in that mode. If you want to animate, you have to do it using events and the player node inside the Blueprint Events tab. Hope this helps.

[@Raven_Renders]

@@philippzakrzewski8180 thank you for such a quick reply! That’s a pain isn’t it!? I’ll see if I can work something out that way then. Thank you!

[@thhm]

Thanks I exposed the rotation and it works for me. However the movement during animation preview in sequencer is not smooth.. It seems like it's shaking the whole time. Any ideas? It's actually shaking during animation preview, even if I dont put any sort of movement to it.

[@thhm]

Seems like it's only a problem with the preview, it looks fine when the animation is rendered.

[@jorgediazalcaraz4696]

Thank you!!!

[@theantihero5428]

How would I do this same thing with an Animation graph? Can it only be done in a construction or event graph?

[@_jeffrey_williams]

I have a spotlight on my BP player character that works in take recorder, but doesn't render out in the final render. Do you have any experience with this issue? Banging my head against the wall.

[@shuranwang4725]

The light is in a skeleton grid body, check Run Construction Script in Sequence, I tried to add animation to drag the timeline, but BP never loaded the animation. I am looking forward to your answer. This question has been bothering me for a long time

[@joedickenson3d]

Hi Shuran 😀 so am I right that you have a light attached to a characters rig and you want to control that light in the sequencer?

[@shuranwang4725]

Yes, I also have a blueprint for a flashlight, which contains a spotlight and a skeletal mesh. Now my solution is to make the skeletal mesh into a blueprint, the light into another blueprint, and the light blueprint is attached to the flashlight blueprint in the Sequence, but I found that the light intensity keyframe did not change in the rendering output.

[@shuranwang4725]

@@joedickenson3d I want to know what needs to be set when the Sequence renders the output or the light blueprint. Did I miss some important settings

[@joedickenson3d]

@@shuranwang4725 so you are managing to change the intensity in the sequencer but when you render it out to a video its not working?

[@joedickenson3d]

@@shuranwang4725 also what version of UE are you using

[@countzero1942]

What happens if you have a Construction Script that does things like creating Material Instances? If the Sequencer is calling the Construction Script to update the variables from the BP to the Light, this sounds like it could cause problems. What are the the best practices for this kind of thing?

[@joedickenson3d]

Hi! Unfortunately I don't know the answer to this question. I would just give it a go and see what happens personally :)

[@ryanjstever]

Just wondering if you could explain how to control the spawn rate of a niagara system to sequencer. I would be greatly appreciative of this!

[@brutalcosmonaut]

Thank You! Just one checkbox! It almost destroyed me

[@ORTyOW]

Please help 😭 I am trying to record a cinematic and I need to change some parameters of BP_Particle_Fireflies (from free "Particles and Wind Control" asset) I activated "Run Construcion Script in Sequencer" and chose "Expose to Cinematic" on a parameter I want to change. I animated the value of a parameter in Cinematic Sequencer, BUT... 1) It is not changing in real time when I hit play in Level Sequencer, it just disappears! It appears again when I turn off "Run Construcion Script in Sequencer" 2) BUT! I can see changes when I manually drag my red slider on the timeline. I thought that it is just the problem in the absence of the possibility to play it real time, and I thought that it will eventually render in Movie Render Queue, but no... It renders without changing

[@zonfarentertainment]

Anyone know if its possible to expose a struct to cinematics?

[@DimitriPappas]

It is if you use a c++ struct (which can be added to a blueprint project too). the key is to set the "Interp" UPROPERTY for that struct variable, which is what exposes it to cinematics. Hopefully they add a checkbox or something for this so we dont need to make a c++ struct just for this

[@恶魔人]

thank you!

[@joedickenson3d]

You're welcome!