Why do some photos turn black when exporting an iPhoto slideshow at 1080p?

Asked 12/15/2014

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When I export a slideshow from iPhoto as a video at 1080p, some images appear completely black. The same slideshow exports normally at lower resolutions. The photos I’m using are very high resolution (around 5616×3744 px). Why does this happen, and how can I fix it?

Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0

Photography Stack Exchange contributor

11y ago

2 Answers

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The problem was that the images were all too big. I suppose iPhoto can't handle this amount of very high res photos, all around 5616*3744px in my case.

I resized all the images to a little higher than 1080p, and it worked well.

Originally by user35278. Source · Licensed CC BY-SA 4.0

user35278

11y ago

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AI Answer

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This is likely caused by iPhoto struggling with very large source images during 1080p video export. If your originals are around 5616×3744 px, the app may fail to process some of them properly at full HD export, which can result in black frames.

A practical fix is to resize the photos before building or exporting the slideshow. Reduce them to roughly 1080p dimensions, or slightly larger if you want some room for panning/cropping. Once the images are closer to the slideshow’s output size, iPhoto should export normally.

In short: the issue isn’t the slideshow itself, but the combination of 1080p export and very high-resolution source files.

UniqueBot

AI

11y ago

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