Effects that disappear after rendering.

[Guest]

Hello everyone! First of all sorry if there are mistakes in my message, my native language is not English. Here's my problem: I'm editing a video lasting 18 minutes. I use at different times of the video a background and a smoked effect (with fractale noise). When I'm on the software everything is fine no problem, but after the rendering, when I watch the video, from half of the video the "smoky" effect is considerably reduced we hardly see it! Whereas before the video arrives halfway we can see it perfectly! Yet the settings of the background and the smoke are the same pusique it's a copy paste. How to correct this? THANKS

[ShiveringCactus]

I think you're saying that the smoke is barely visible when it's overlaid on top of video.  That might be down to the transfer mode you're using.  Instead of a transfer mode, if you want solid smoke, try the extract effect or search for "unmult" in effects and presets.

[Guest]

Thank you for your answer, I'll try what you tell me, but why does the smoke become less visible from halfway through the video when the first minute is fine?

[ShiveringCactus]

I'd need to see your whole after effects window to tell that and some frames before and after.  Can you post them here?

[Guest]

As you can see, the smoke can be seen very well on the software but after the rendering we see almost nothing. And before this background appears in the video, the smoke can be seen very well, which is why I don't understand why the smoke is almost invisible after a while.

[Mylenium · Accepted solution]

As already said by the cactus man, we need to see your timeline and composition. Aside from potential issues with blending modes your Fractal Noise could simply stop animating halfway through when the values reach their maximum or something like that.

Mylenium

[Guest]

Thank you for you help you have right with the maximum values 🙂