How can I convert PDF Files to TIFF files with compression (Group 4 compression) - python-imaging-library

Question

I am trying to complete a task to convert PDF's to TIFF files with CCITT t.4 compression. I am using the PymuPDF library/Pillow. From the code below, I am can generate the TIFF files fine, but I can't seem to add the compression to them no matter what I try. Anyone have any idea how I can accomplish this?
import fitz
import os
mat = fitz.Matrix(300 / 72, 300 / 72) # sets zoom factor for 300 dpi
doc = fitz.open(r"C:\testtiff4\test.pdf")
page_count = doc.pageCount
for page in range(0, page_count):
page_load = doc.loadPage(page)
pix = page_load.get_pixmap(matrix=mat)
img_filename = os.path.join(r"C\testtiff4", "page-%04i.tiff" % page_load.number)
pix.pil_save(img_filename, format="TIFF", dpi=(300,300), compression="group4")
When running the above code, I get the error:
OSError: encoder error -2 when writing image file

Answer 1

You need to have libtiff installed in order to write Group4 compressed files. Check like this:
python -m PIL
Sample Output
--------------------------------------------------------------------
Pillow 8.0.1
Python 3.9.1 (v3.9.1:1e5d33e9b9, Dec 7 2020, 12:10:52)
[Clang 6.0 (clang-600.0.57)]
--------------------------------------------------------------------
Python modules loaded from /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/PIL
Binary modules loaded from /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/PIL
--------------------------------------------------------------------
--- PIL CORE support ok, compiled for 8.0.1
--- TKINTER support ok
--- FREETYPE2 support ok, loaded 2.10.4
--- LITTLECMS2 support ok, loaded 2.10
--- WEBP support ok, loaded 1.1.0
--- WEBP Transparency support ok
--- WEBPMUX support ok
--- WEBP Animation support ok
--- JPEG support ok, compiled for 9.0
--- OPENJPEG (JPEG2000) support ok, loaded 2.3.1
--- ZLIB (PNG/ZIP) support ok, loaded 1.2.11
--- LIBTIFF support ok, loaded 4.1.0
*** RAQM (Bidirectional Text) support not installed
*** LIBIMAGEQUANT (Quantization method) support not installed
--- XCB (X protocol) support ok