PIL “IOError: image file truncated” with big images

by

I’m a little late to reply here, but I ran into a similar problem and I wanted to share my solution. First, here’s a pretty typical stack trace for this problem:

Traceback (most recent call last):
  ...
  File ..., line 2064, in ...
    im.thumbnail(DEFAULT_THUMBNAIL_SIZE, Image.ANTIALIAS)
  File "/Library/Python/2.7/site-packages/PIL/Image.py", line 1572, in thumbnail
    self.load()
  File "/Library/Python/2.7/site-packages/PIL/ImageFile.py", line 220, in load
    raise IOError("image file is truncated (%d bytes not processed)" % len(b))
IOError: image file is truncated (57 bytes not processed)

If we look around line 220 (in your case line 201—perhaps you are running a slightly different version), we see that PIL is reading in blocks of the file and that it expects that the blocks are going to be of a certain size. It turns out that you can ask PIL to be tolerant of files that are truncated (missing some file from the block) by changing a setting.

Somewhere before your code block, simply add the following:

from PIL import ImageFile
ImageFile.LOAD_TRUNCATED_IMAGES = True

…and you should be good.

EDIT: It looks like this helps for the version of PIL bundled with Pillow (“pip install pillow”), but may not work for default installations of PIL

More Related Contents:

  1. How do I resize an image using PIL and maintain its aspect ratio?
  2. How to convert a PIL Image into a numpy array?
  3. In Python, how do I read the exif data for an image?
  4. How to merge a transparent png image with another image using PIL
  5. How to reduce a jpeg size to a ‘desired size’?
  6. Get pixel’s RGB using PIL
  7. Image library for Python 3
  8. How to use PIL to make all white pixels transparent?
  9. PIL: Convert Bytearray to Image
  10. How do I convert a PIL Image into a NumPy array?
  11. Changing image hue with Python PIL
  12. How to reduce the image file size using PIL
  13. How do you merge images into a canvas using PIL/Pillow?
  14. Getting list of pixel values from PIL
  15. How do I get the picture size with PIL?
  16. Can you “stream” images to ffmpeg to construct a video, instead of saving them to disk?
  17. How to Split Image Into Multiple Pieces in Python
  18. PIL – draw multiline text on image
  19. How to convert a grayscale image into a list of pixel values?
  20. Convert png to jpeg using Pillow
  21. How to read a raw image using PIL?
  22. Convert PIL Image to byte array?
  23. How to show PIL images on the screen?
  24. Change EXIF data on JPEG without altering picture
  25. img = Image.open(fp) AttributeError: class Image has no attribute ‘open’
  26. Detecting thresholds in HSV color space (from RGB) using Python / PIL
  27. Colorize image while preserving transparency with PIL?
  28. Add Text on Image using PIL
  29. Automatically cropping an image with python/PIL
  30. How to get alpha value of a PNG image with PIL?

Leave a Comment