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Image.Thumbnail causes distortion on underlying file

See original GitHub issue

I’ve been using NetVips successfully for many images, but a few have suddenly caused some weird distortions and I cannot understand why.

This is the original file test expected

This is the thumbnail produced: test2_output

Here is the code

var expectedBytes = Image.Thumbnail("expected.jpg"), 320).WriteToBuffer(".png");
var thumbnail = Image.Thumbnail("input.jpg", 320);
var actualBytes = File.ReadBytes("output/expected.png")

Assert.Equal(expectedBytes, actualBytes)

I tried both jpg and png (not sure if NetVips does anything different), but it always spits out this weird corrupted version. Yet windows viewer can open it fine.

Any ideas?

Issue Analytics

  • State:closed
  • Created 2 years ago
  • Comments:15 (13 by maintainers)

github_iconTop GitHub Comments

kleisaukecommented, Jan 27, 2022

NetVips.Native v8.12.2 is now available with this fix included. Thanks for reporting this!

jcupittcommented, Jan 22, 2022

I don’t think we’ve found the right fix yet, unfortunately 😦 I’m poking about now.

Read more comments on GitHub >

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