On certain jpgs, getting error InvalidImage: Animation file, Corrupted file or Unsupported type

[krystalgd]

Mokuro fails for me on certain images. I'm on Windows, and I have the CPU version of PyTorch installed. I can reproduce the error reliably with the following image,

https://github.com/user-attachments/assets/0af5206a-d63f-4fb6-b005-eb5ad8ce6e76

2025-08-08 19:20:29.920 | INFO     | mokuro.run:run:133 - Processing 1/1: C:\Users\krystal\Desktop\よつばと!\test
Processing pages...:   0%|                                                                                                                                                                | 0/1 [00:00<?, ?it/s]2025-08-08 19:20:29.946 | INFO     | mokuro.manga_page_ocr:__init__:41 - Initializing text detector, using device cpu
2025-08-08 19:20:31.193 | INFO     | manga_ocr.ocr:__init__:16 - Loading OCR model from kha-white/manga-ocr-base
2025-08-08 19:20:32.814 | INFO     | manga_ocr.ocr:__init__:28 - Using CPU
2025-08-08 19:20:33.678 | INFO     | manga_ocr.ocr:__init__:35 - OCR ready
Processing pages...:   0%|                                                                                                                                                                | 0/1 [00:03<?, ?it/s]
2025-08-08 19:20:33.701 | ERROR    | mokuro.run:run:142 - Error while processing C:\Users\krystal\Desktop\よつばと!\test
Traceback (most recent call last):

  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code

  File "C:\Users\krystal\AppData\Local\Programs\Python\Python313\Scripts\mokuro.exe\__main__.py", line 6, in <module>
    sys.exit(main())
    │   │    └ <function main at 0x000002C152E351C0>
    │   └ <built-in function exit>
    └ <module 'sys' (built-in)>

  File "C:\Users\krystal\AppData\Local\Programs\Python\Python313\Lib\site-packages\mokuro\__main__.py", line 7, in main
    fire.Fire(run)
    │    │    └ <function run at 0x000002C10365CA40>
    │    └ <function Fire at 0x000002C103607060>
    └ <module 'fire' from 'C:\\Users\\krystal\\AppData\\Local\\Programs\\Python\\Python313\\Lib\\site-packages\\fire\\__init__.py'>
  File "C:\Users\krystal\AppData\Local\Programs\Python\Python313\Lib\site-packages\fire\core.py", line 135, in Fire
    component_trace = _Fire(component, args, parsed_flag_args, context, name)
                      │     │          │     │                 │        └ 'mokuro'
                      │     │          │     │                 └ {}
                      │     │          │     └ Namespace(verbose=False, interactive=False, separator='-', completion=None, help=False, trace=False)
                      │     │          └ ['C:\\Users\\krystal\\Desktop\\よつばと!\\test\\']
                      │     └ <function run at 0x000002C10365CA40>
                      └ <function _Fire at 0x000002C10365C400>
  File "C:\Users\krystal\AppData\Local\Programs\Python\Python313\Lib\site-packages\fire\core.py", line 468, in _Fire
    component, remaining_args = _CallAndUpdateTrace(
    │                           └ <function _CallAndUpdateTrace at 0x000002C10365C540>
    └ <function run at 0x000002C10365CA40>
  File "C:\Users\krystal\AppData\Local\Programs\Python\Python313\Lib\site-packages\fire\core.py", line 684, in _CallAndUpdateTrace
    component = fn(*varargs, **kwargs)
                │   │          └ {}
                │   └ ['C:\\Users\\krystal\\Desktop\\よつばと!\\test\\']
                └ <function run at 0x000002C10365CA40>
> File "C:\Users\krystal\AppData\Local\Programs\Python\Python313\Lib\site-packages\mokuro\run.py", line 137, in run
    mg.process_volume(volume, ignore_errors=ignore_errors, no_cache=no_cache)
    │  │              │                     │                       └ False
    │  │              │                     └ False
    │  │              └ <mokuro.volume.Volume object at 0x000002C10364DFD0>
    │  └ <function MokuroGenerator.process_volume at 0x000002C1035CE8E0>
    └ <mokuro.mokuro_generator.MokuroGenerator object at 0x000002C10364E270>
  File "C:\Users\krystal\AppData\Local\Programs\Python\Python313\Lib\site-packages\mokuro\mokuro_generator.py", line 65, in process_volume
    raise e
  File "C:\Users\krystal\AppData\Local\Programs\Python\Python313\Lib\site-packages\mokuro\mokuro_generator.py", line 58, in process_volume
    result = self.mpocr(volume.path_in / img_path_rel)
             │    │     │      │         └ WindowsPath('よつばと!_4_146.jpg')
             │    │     │      └ <property object at 0x000002C102736D40>
             │    │     └ <mokuro.volume.Volume object at 0x000002C10364DFD0>
             │    └ <mokuro.manga_page_ocr.MangaPageOcr object at 0x000002C10364EF90>
             └ <mokuro.mokuro_generator.MokuroGenerator object at 0x000002C10364E270>
  File "C:\Users\krystal\AppData\Local\Programs\Python\Python313\Lib\site-packages\mokuro\manga_page_ocr.py", line 50, in __call__
    raise InvalidImage()
          └ <class 'mokuro.manga_page_ocr.InvalidImage'>

mokuro.manga_page_ocr.InvalidImage: Animation file, Corrupted file or Unsupported type
2025-08-08 19:20:33.723 | INFO     | mokuro.run:run:146 - Processed successfully: 0/1

[FluffyDiscord]

+1 Tried to re-save images, but that didn't help.

[ChadMcCracken]

For me, this was caused by an image that was missing pixel data towards the end. I loaded the offending image in Windows Image Viewer and saw grey squares on the bottom right. If redownloading doesn't fix it then the image may have to be repaired in external programs like GIMP.