Hi,
Trying to take a screenshot using grim inside a Python script using subprocess but I am getting an invalid geometry error. This is running on a headless setup, here's the applicable part of my code
And the extended error:
Any ideas on what I've done wrong?
Also, my end goal is to take a screenshot at regular intervals and process it though tesseract. I'm not even sure if this is possible on a headless Pi, as I won't be VNCd into it all of the time? I'm thinking there's no screen so nothing to screenshot?
Trying to take a screenshot using grim inside a Python script using subprocess but I am getting an invalid geometry error. This is running on a headless setup, here's the applicable part of my code
Code:
grim_region = f"{x},{y}, {w}x{h}" ss_data = subprocess.check_output(["grim", "-g", grim_region, "-t", "ppm", "-"])Code:
File "/usr/lib/python3.11/subprocess.py", line 571, in run raise CalledProcessError(retcode, process.args,subprocess.CalledProcessError: Command '['grim', '-g', '1605,296, 85x24', '-t', 'ppm', '-']' returned non-zero exit status 1.Also, my end goal is to take a screenshot at regular intervals and process it though tesseract. I'm not even sure if this is possible on a headless Pi, as I won't be VNCd into it all of the time? I'm thinking there's no screen so nothing to screenshot?
Statistics: Posted by FISTPI — Mon Mar 10, 2025 5:47 pm — Replies 1 — Views 61