JPEG image being identified as MPO #1138
Description
Hi,
We're using Pilbox which depends on Pillow and performs image resizing as a service. A few of our images in production are failing because Pillow is returning the image format as MPO and not JPEG, so Pilbox throws an error because MPO is not a supported format.
The image identifies as a JPEG in ImageMagick, PhotoShop, etc. and opens fine in those programs as a JPEG. However, if we open the failing image in PhotoShop and save a new copy as a new JPEG file, the new image no longer reproduces the issue. Obviously there's something funky going on with the image file, but we can't identify what.
Here is a minimal test case showing the issue:
Image (should be JPEG, identifies as MPO): https://drive.google.com/file/d/0Bx-VFyfqu1DlaFlKVVk1ZDh6S2lPbGFwNUFlN3liQW1PRER3/view?usp=sharing
import sys
import PIL.Image
img = PIL.Image.open(sys.argv[1])
print(img.format)Save the image to example.jpg and the python script to jpeg_mpo_test.py, and run:
python jpeg_mpo_test.py example.jpg
It prints "MPO" and not "JPEG".
We'd really appreciate any help in figuring this out as we are depending on these libraries on some live apps. Let me know what other information you need. Thanks in advance!