What did you do?

I tried to save a PIL.Image.Image (mode=RGBA, size=335x333, 8 bits per sample) to a TIFF file with LZW compression and 9 rows per strip.

img.save('output.tiff', compression='tiff_lzw', tiffinfo={278: 9})

What did you expect to happen?

The file to be saved as a TIFF file with LZW compression and 9 rows per strip.

What actually happened?

The file was saved as a TIFF file with LZW compression and 48 rows per strip.

What are your OS, Python and Pillow versions?

• OS: Windows 10 64-bit
• Python: 3.9.5
• Pillow: 9.2.0