Frames of PNG-sequences getting mixed up on the timeline and final render

[Studiomederwerker1]

I have this very crazy problem that when I place several PNG-sequences on the timeline, after working on the project for a while, some frames from a PNG-sequence appear on other places in the timeline in another PNG-sequence. This can also be seen in the final render with Adobe Media Encoder. The only thing that helps, to remove these wrong frames, is to use 'replace footage' and import the PNG-sequence again. I work with AE2020 on a PC. Someone an idea where this problem comes from and how I can prevent it?

[Martin_Ritter]

I don't know how to prevent it, but purge the frame cache should solve this - at least for a while.

*Martin

[Studiomederwerker1]

I'll try that the next time it happens, thnx.

[Dave_LaRonde]

You may also find it handy to trash your preferences in situations like that, too.  But first -- while everything is running properly -- SAVE your AE preferences in a separate file.  You can do that, and when you have to trash them you can open the saved preference file.  Boom!  You're back in business.

[Zentin36849787tjwf]

1. Check File Names: Ensure each frame in the PNG sequence is named sequentially (e.g., frame_001.png, frame_002.png) to maintain proper order.

2. Timeline Organization: Confirm that the frames are imported in the correct order on the timeline. Re-import the sequence if necessary.

3. Frame Rate Match: Match the frame rate of the PNG sequence with your project's timeline settings.

4. Check Software Settings: Verify that your editing or compositing software is set to handle PNG sequences correctly.

5. Clean Cache: Clear the software's cache to resolve any potential conflicts affecting the sequence.

6. Render Settings: Confirm your render settings align with the project timeline and PNG sequence.

7. Preview Before Rendering: Always preview the sequence before final rendering to check for any issues.

8. Export with Care: Use appropriate export settings to maintain the quality and sequence order.

9. Double-Check Output: After rendering, review the output file to ensure the sequence is consistent.

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11. Offer Unique Services: Consider adding value by offering additional services such as color grading or sound design.

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