microsoft / microsoft/markitdown
PdfConverter fails on valid PDF: ValueError not enough values to unpack (expected 4, got 2)
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Description
Summary
markitdown fails to convert a PDF with PdfConverter threw ValueError: not enough values to unpack (expected 4, got 2).
The ffmpeg / pydub warning appears first, but seems unrelated because this is a PDF conversion.
Command
markitdown chapter11.pdf -o chapter11.md
Result:
markitdown._exceptions.FileConversionException: File conversion failed after 1 attempts:
- PdfConverter threw ValueError with message: not enough values to unpack (expected 4, got 2)
Traceback:
markitdown\converters\_pdf_converter.py
pdfminer.high_level.extract_text(...)
ValueError: not enough values to unpack (expected 4, got 2)
Environment
OS: Windows
Python: 3.13.13
markitdown: 0.1.6
pdfplumber: 0.11.9
pdfminer.six: 20251230
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Research direction
Start in markitdown/converters/_pdf_converter.py and trace the call to pdfminer.high_level.extract_text using the reported chapter11.pdf reproduction. Check the interaction with the reported pdfminer.six and pdfplumber versions; done means the valid PDF converts to Markdown without the unpacking error.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- content
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100