Illustrates Pixmap regression introduced in PyMuPDF 1.14.13

keep_proportion.py

import fitz
import io
import requests

PDF_URL = "https://github.com/pymupdf/PyMuPDF/raw/master/examples/colordbHSV.pdf"
PNG_URL = "https://www.onlygfx.com/wp-content/uploads/2018/07/12-grunge-brush-stroke-banner-11.png"


def handle(_):
    pdf = requests.get(PDF_URL).content
    png = requests.get(PNG_URL).content
    rect = fitz.Rect(0, 0, 400, 50)
    document = fitz.open(stream=pdf, filetype="pdf")

    for page in document:
        page.insertImage(rect, pixmap=fitz.Pixmap(png), keep_proportion=True)

    return document.write()


if __name__ == "__main__":
    result = handle(None)
    with open("result.pdf", "wb") as file:
file.write(result)

Your example works always, if you take stream instead of pixmap.

(Not to mention, that the pixmap should be created only once, outside the loop for every page ...)

So there is a problem with specifically pixmap now ...

Segfaults on macOS Mojave (10.14.3), too. Stream and filename work.

Reverting to pip install pymupdf==1.14.12 works fine with pixmap, so there is an error introduced in 1.14.13?