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Question

All opacities @ 100 change to 98

Forum|Forum|7 years ago
November 5, 2018
8 replies
2228 views

So basically this is something I’ve noticed a couple times in After Effects. I’ll have a layer that frequently changes from 0 opacity to 100 opacity at different frames. However, when I go back and rewatch my video, I notice that at every frame it should be at 100 opacity its been sifted down to something slightly lower like 98 or 96. And sometimes it shifts the 0’s up to like 4 as well and idk how to avoid this problem or fix it without editing every other keyframe. most times its only at the frames its supposed to be at 100 that its been shifted, the zeros more times than not are untouched! Can someone explain what the heck is going on??

Thank you

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Mo Moolla

Legend

I have had a look at the vid in detail and see that its psd's on the layers that are somehow changing opacity values. This rules out the possibility that frame rates do not match the sequence. Keyframes work independently and hold their values unless told to change. They do not magically change lol. These are static images so the opacity change issue should not be happening whatsoever. Its a strange one that I haven't seen happen on any version of AE before. Perhaps CC2019 is causing this somehow. As a temp fix I would reset or trash preference files completely and see what happens. Should this not work I would recommend either a role back to CC2018 or waiting for Adobe to release a patch for the bugs CC2019 is experiencing. Let me know how it goes. Mo

OussK

Community Expert

Maybe you don't notice that but they already use CC2018 and they think to upgrade to cc2019 but i'm almost sure it's not a release issue, the best reason to have this issue is when you change the frame rate of composition (but eve this can change the value before or after the keyframe and not the keyframe it self), and the best solution is by convert keyframe to toggle hold keyframes.

Mo Moolla

Legend

Hi sorry didn’t notice the version. In any case thie value change in opacity should not be occurring. I don’t see any frame rate changes in the video the OP posted and he is using pas files which are static images which won’t affect frame rate. The only other possibility is that frame rate was changed during the course of the project that’s not evident on his YouTube clip.

OP can you elaborate on this

A

amym76291864Author

Participating Frequently

UPDATE! so I went back and fixed everything, changed all the 98s to 100s......went back to rewatch...AND NOW ALL THE 100S ARE 97!!!! WHAT IS HAPPENING!!!

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amym76291864Author

Participating Frequently

maybe it has something to do with somehow selecting all the keyframes but idk why that would only effect the 100s and not the 0s

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amym76291864Author

Participating Frequently

here's a video of the issue

HELP ME - YouTube

OussK

Community Expert

i think you mean toggle hold keyframes linear key frame do an other thing, so to set your keyframes as a linear , to select all opacity keyframes than go to Animation/keyframes interpolation than set the temporal interpolation to linear.

OussK

Community Expert

also it can be happen if your keyframes set to bezier so the value between 2 keyframes will be change to be sure to set your keyframes to linear

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amym76291864Author

Participating Frequently

They are linear and actually the key frames are right next to one another. like I have it set too be 100 at frame 21 and then 0 at 22. so I know the linear things isn't the issue. thank you for your help though

angie_taylor

Legend

This can happen if you render at a different frame rate from your comp frame rate. For example, if you create a 25 FPS comp and have the value change to 100 on a particular frame. Then you render it at 15FPS, the frames (and therefore keyframes) may not coincide time-wise. So the nearest value will be used.

It can also happen if you retime and animation and the keyframes are not exactly on a frame. You can check by zooming into frame view to make sure your KFs are sitting exactly on frames.

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amym76291864Author

Participating Frequently

I haven't rendered out the video yet. I'll just scroll back in the time line to preview what I have so far to fix any issues early on and thats when I notice this and have to go to each frame that should be at 100 and change it back

ScooterD76

Legend

I *might* be experiencing the same issue- while animating a bunch of layers between 0 and 100 opacity I noticed some of them at 98 and 1%. Not sure if im having this same problem or I am just dragging values too quickly without paying attention...

Dave_LaRonde

Inspiring

In my experience, this always happens because of inaccurate scrubbing of opacity values.

Of course, I run an AE version that actually behaves as it should. Initial releases of new versions are always a crap shoot.

A

amym76291864Author

Participating Frequently

So is there any way to fix this or stop it from happening again? Or is it just because this version of AE is buggy?

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