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Loosing all my Preview Render Files when Editing with overlays

Engaged ,
Feb 06, 2024 Feb 06, 2024

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I have to output my final Video with two overlays: A timecode overlay for review and a transparent overlay logo from the broadcast station. I put them on top and lock those tracks.

 

Now I need to render preview files and use those for final export to speed things up. But sometimes when I edit a tiny bit underneath those overlays sometimes only the edited bit turns "yellow", loosing all rendered previews and sometimes the whole timeline suddenly turn unrendered.I am NOT altering or moving the other clips even by any frame, so the rest of the timeline should stay exactly the same. Why does this happen and how can I prevent it?

 

Do I have to split the overlays to multiple sections so it doesnt "unrender" my whole timeline?  

TOPICS
Editing , Error or problem , Export , How to , Performance

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Community Expert ,
Feb 06, 2024 Feb 06, 2024

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check project settings -> Renderer (Software Only or GPU Acceleration?)

check your preview cache locations as well

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Engaged ,
Feb 06, 2024 Feb 06, 2024

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Thanks. Settings are all fine: On Apple Silicon only Metal is available as Renderer, and Preview Cache location is my user folder on the internal SSD.

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Community Expert ,
Feb 06, 2024 Feb 06, 2024

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try adjustment layers and nesting, check if that helps

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Engaged ,
Feb 06, 2024 Feb 06, 2024

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What exactly do you mean?

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