Render problem image files

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erikvanschaaik
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Render problem image files

Post by erikvanschaaik » Mon Jul 23, 2018 10:51 am

My project has a couple of small image files in it. When I render a single frame everything renders fine, but when I render to a sequence of png's the images are showing up as placeholder/broken link images.

How do I get it to render correctly?
erikvanschaaik
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Re: Render problem image files

Post by erikvanschaaik » Mon Jul 23, 2018 11:20 am

Adding to that:

It doesn't render correct on a Mac. When I switch to PC, it renders fine.
Why can't I render image files on Mac?
I haven't the foggiest...
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synthsin75
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Re: Render problem image files

Post by synthsin75 » Mon Jul 23, 2018 4:38 pm

That usually means you're running out of RAM. My guess is that your PC has a dedicated graphics card (with its own RAM) and your Mac doesn't.
erikvanschaaik
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Re: Render problem image files

Post by erikvanschaaik » Mon Jul 23, 2018 7:21 pm

Yes, that's what I thought,
but my Mac is a huge state of the art machine, stuffed with ram, and my PC is a tiny, 3 year old Surface pro...
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synthsin75
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Re: Render problem image files

Post by synthsin75 » Mon Jul 23, 2018 8:39 pm

You might be able to render smaller sequences at a time. That should keep it from exhausting your memory.
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slowtiger
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Re: Render problem image files

Post by slowtiger » Mon Jul 23, 2018 9:35 pm

- are the PNGs on a different drive?

- Test with multiple thread rendering switched OFF.

- Test with rendering an image sequence instead of a video file.
AS 9.5 MacPro Quadcore 3GHz 16GB RAM OS 10.6.8 Quicktime 7.6.6
AS 11 MacPro 12core 3GHz 32GB RAM OS 10.11 Quicktime 10.7.3
erikvanschaaik
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Re: Render problem image files

Post by erikvanschaaik » Tue Jul 31, 2018 2:54 pm

Thanks for helping. I tried all your suggestions. I'm afraid nothing worked.
I'll just have to render on my little pc laptop then. The mac simply won't render.
Weird huh?
obtusity
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Re: Render problem image files

Post by obtusity » Fri Aug 03, 2018 12:50 am

Is your Mac render output folder being backed up by macOS's Time Machine or similar, or synced to an online service such as iCloud, Dropbox, Google Drive, OneDrive?

This type of sync system can interfere with output options in a variety of software (I suspect a difference between either atomic/non-atomic file operations or write/append mode triggers timing problems with the sync and partially written files). I've seen it break file saving in both graphics software and database software, especially with complex, large, or multiple files being saved in a short time period. The problem can be infrequent and intermittent.
Possibly related to the "different drive" point by slowtiger.

Rendering to a non-synced folder then copying/moving to the synced folder afterwards usually works fine (that's using atomic file operations with write rather than append).
erikvanschaaik
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Re: Render problem image files

Post by erikvanschaaik » Sat Aug 04, 2018 9:55 am

Thanks! I do have time machine working, and Dropbox as well. I'll have to check if things work better without these.
I'll let you know.
(working against a deadline, so I may not respond that quickly)
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