Error opening jpeg file

[bigcat88]

Maybe it is something wrong on my setup, but never seen that Pillow had problems with jpeg files.
Unfortunately currently has no free time to dive and debug/fix it myself.

I will just create an issue, feel free to close it, if after test there will be no problem found.

What are your OS, Python and Pillow versions?

• OS: macOS 14
• Python: 3.11.6
• Pillow: 10.2 / 10.3.0.dev0

from PIL import Image, ImageSequence

if __name__ == "__main__":
    i = Image.open("bad.jpeg")
    for b in ImageSequence.Iterator(i):
        print(b.getexif())  # SyntaxError: not a TIFF file (header b'http://n' not valid)

from PIL import Image

if __name__ == "__main__":
    i = Image.open("bad.jpeg")
    i.show() # OSError: image file is truncated (664585 bytes not processed)

Problematic file(removed)

[radarhere]

For i.show(), loading truncated images is enough to fix this.

from PIL import Image, ImageFile
ImageFile.LOAD_TRUNCATED_IMAGES = True

if __name__ == "__main__":
    i = Image.open("bad.jpeg")
    i.show()

Also, as far as Pillow is concerned at least, this isn't a JPEG image, it's an MPO.

[bigcat88]

For i.show(), loading truncated images is enough to fix this.

I doubt the file is corrupted or truncated..
As I remember it is just and exported file from Apple "Photos" app

[radarhere]

Looking at the EXIF matter, I take page 10 of the MPO specification to make that APP1 markers should contain EXIF data in MPO images. However, your MPO image does not. I've created #7884 to update Pillow to be flexible, allowing your code to output this instead -

{322: 512, 323: 512, 296: 2, 34665: 246, 271: 'Apple', 272: 'iPhone 13 Pro', 305: '16.2', 274: 1, 306: '2023:02:25 11:13:13', 531: 1, 282: 72.0, 283: 72.0, 316: 'iPhone 13 Pro'}
{322: 512, 323: 512, 296: 2, 34665: 246, 271: 'Apple', 272: 'iPhone 13 Pro', 305: '16.2', 274: 1, 306: '2023:02:25 11:13:13', 531: 1, 282: 72.0, 283: 72.0, 316: 'iPhone 13 Pro'}
{322: 512, 323: 512, 296: 2, 34665: 246, 271: 'Apple', 272: 'iPhone 13 Pro', 305: '16.2', 274: 1, 306: '2023:02:25 11:13:13', 531: 1, 282: 72.0, 283: 72.0, 316: 'iPhone 13 Pro'}
{322: 512, 323: 512, 296: 2, 34665: 246, 271: 'Apple', 272: 'iPhone 13 Pro', 305: '16.2', 274: 1, 306: '2023:02:25 11:13:13', 531: 1, 282: 72.0, 283: 72.0, 316: 'iPhone 13 Pro'}
{322: 512, 323: 512, 296: 2, 34665: 246, 271: 'Apple', 272: 'iPhone 13 Pro', 305: '16.2', 274: 1, 306: '2023:02:25 11:13:13', 531: 1, 282: 72.0, 283: 72.0, 316: 'iPhone 13 Pro'}
{322: 512, 323: 512, 296: 2, 34665: 246, 271: 'Apple', 272: 'iPhone 13 Pro', 305: '16.2', 274: 1, 306: '2023:02:25 11:13:13', 531: 1, 282: 72.0, 283: 72.0, 316: 'iPhone 13 Pro'}
{322: 512, 323: 512, 296: 2, 34665: 246, 271: 'Apple', 272: 'iPhone 13 Pro', 305: '16.2', 274: 1, 306: '2023:02:25 11:13:13', 531: 1, 282: 72.0, 283: 72.0, 316: 'iPhone 13 Pro'}
{322: 512, 323: 512, 296: 2, 34665: 246, 271: 'Apple', 272: 'iPhone 13 Pro', 305: '16.2', 274: 1, 306: '2023:02:25 11:13:13', 531: 1, 282: 72.0, 283: 72.0, 316: 'iPhone 13 Pro'}

[bigcat88]

Thank you, it was mainly the Exif reading code that worried me. Issue can be closed)

[radarhere]

Actually, I've updated the PR to fix the reading of the size from your image as well, so the truncation problem is also fixed.

[bigcat88]

Wow, this is amazing news, it's nice to know that even photos that do not fully comply with the JPEG format will no longer cause exceptions :)

Thank you again, good job.