Skip to main content
Known Participant
December 14, 2025
Answered

Can't get animate to respect duration on a static image at beginning

  • December 14, 2025
  • 1 reply
  • 483 views

Hi,

I finished one movie - have already published it to mp4 and it's all good. I decided I wanted to add a thumbnail for the first 30 or so frames, then have it fade to the original movie. No matter WHAT I've tried, Animate will only show the thumbnail for about 1 frame, then jump to the frame. Here's what I know:

  • Scrubbing works perfectly 

  • Timeline looks correct 

  • Frames are extended correctly 

  • No actions are running 

  • Fade technically exists (it does fade, just too fast) 

  • Playback / export still flashes 

ChatGPT told me that Animate does NOT necessarily render frame 1 as a duration, so I went back and put keyframes in the first 30 frames where I wanted the static image to persist. Animate still shows frame 1 and then jumps to the frame where the fade starts. I closed and reopened Animate. I tried the "Clear Publish Cache and Test Movie". I tried moving the thumbnail layer to the top instead of the bottom. None of that has helped. 

 

Now ChatGPT is telling me this:

Animate does not reliably honor static duration at the start of an MP4, even when:

  • frames exist

  • keyframes exist

  • fades exist

  • cache is cleared

  • no actions exist

  • scrub playback is correct

This has been reported for years. It happens more often in files with:

  • many layers

  • nested symbols

  • legacy timelines (which you have, by design)

 

So IS there any solution? Has anyone else encountered this? I'm pulling my hair out and yet I NEED this thumbnail at the beginning of this new movie. I haven't tried exporting it to an mp4 yet, but according to ChatGPT, that's not likely to help either.

 

 

    Correct answer kglad

    Oh golly. My face is VERY red. I just figured out that Animate is doing EXACTLY what I'm telling it to do, i.e., at frame 30 (i.e., after ONE second), it was beginning the fade. The fade lasted LESS than a second and the movie was beginning at frame 45, i.e., about 1 1/2 seconds in. I'm not sure WHY I thought 30 frames would be enough for something like this! I'm so sorry, but very much appreciate your responses. As embarrassed as I am, I'm hoping maybe this will help someone else who ALSO misjudged how much time they need. 

     

    Thanks kglad.      🙂


    you're welcome.

    1 reply

    kglad
    Community Expert
    Community Expert
    December 14, 2025

    what do you mean by original movie?

     

    is that something in a keyframe? if so, what object type is in that keyframe?

    Known Participant
    December 14, 2025

    I made one movie - it's on YouTube as an mp4.

     

    Then I decided I wanted to put a static thumbnail at the beginning. So I renamed the .fla file I had used for the original movie - the one that's now on YouTube. Then I inserted about 45 frames at the very beginning - created an mc out of the .png of the thumbnail and put it in the very first keyframe. I added antoher keyframe at about frame 30, and another at about frame 45. I added a classic tween between 30 and 45 on that layer and tweened the alpha down to 0. 

     

    So no, as far as I can tell, the original movie (which starts on about frame 45 - I pushed all layers over that far to make room for the thumbnail) is not causing the problem. When I do ctl + enter, it plays fine from 45 to the end. But just visually, it looks like what it's doing is playing keyframe 1 (with the thumbnail mc), then jumping to frame 30 and playing the fade to frame 45. 

     

    I just had a thought - I'm going to try putting a classic tween from 1 - 30 - not change anything in either keyframe - just to see if that will make it actually PLAY those first 30 frames.

    Known Participant
    December 14, 2025

    Unfortunately, adding the tween didn't help.