Skip to main content
D
distriller
Known Participant
August 25, 2022
Question

Strange bug: content (image) missing for one frame after rendering

  • August 25, 2022
  • 1 reply
  • 1347 views

I spent many hours with this, rebooting the computer, nothing helps. I have a simple After Effects project with a few layers, containing simple psd/png/jpg images, some masks, some audio, very simple. When I play my composition on the timeline, it shows correctly in the preview screen. However, if I either render the file (to .mp4 for example) or create another composition where I place the initial comp into, in the middle of the video, one layer has an empty frame without a reason!

 

This has to be a bug. The behavior is totally erratic. If I fiddle around, changing the keyframes a bit (adjusting timing etc.), the problem may disappear without any logical reason. Then, after a few minutes, the problem reappears even it was already fixed several times before. It may have to do with time remapping. Possibly the time remapping has some bug where it renders the exact same thing differently when previewing on timeline and when exporting and when placing a comp into a comp etc.

 

What's going on? How to ensure this problem doesn't occur?

This topic has been closed for replies.

1 reply

Mylenium
Mylenium
Legend
August 25, 2022

Sounds like simple hardware acceleration issues and/ or cache corruption. Impossible to say much without actual system info, details about the relevant settings and so on. In any case start by checking your hardware acceleration stuff, flush the caches, revert to software-only rendering and so on. Everything else will require more info.

 

Mylenium

D
distrillerAuthor
Known Participant
August 25, 2022

I tried deleting the (huge) caches in After Effects (Media & Disk Cache). I tried software-only rendering in AME. No difference, one frame is incorrectly not showing a graphic element at all. AE shows it in the timeline preview correctly (however sometimes it doesn't show, it's random, but mostly the timeline preview works). 

 

My computer is HP ZBook Studio 15 G7 Mobile Workstation (HP ZBSG7) and I'm using this (latest, 2022-08-02) NVIDIA driver: 516.94-quadro-rtx-desktop-notebook-win10-win11-64bit-international-dch-whql.exe. What else can I list?

D
distrillerAuthor
Known Participant
August 25, 2022

The problematic frame occurs in a place where a layer has been split into two layers. The seam is the problematic frame. The upper layer's first frame is invisible while it logically should not be. Sometimes timeline shows it invisible, until I fiddle around with keyframes, then it changes randomly.

 

Very strange: I now created a one additional frame to insert a fix to the invisible frame. The fix works so I got the job done. However, now if I pull the layer below to one left, to see what happens, the layer above disappears! So the layer under the fix frame both is invisible (it shouldn't) and it also makes the layer above invisible. Also, now that I made the fix, another frame earlier in the timeline gets a similar vanishing problem in another layer. It's like my project is possessed to ruin my project. What's happening? Mode = Normal and Track matte = None.

Terms & ConditionsAccessibility statement
Using the community Terms of use Privacy Cookie preferences Do not sell or share my personal information ad choicesAdChoices