Python snippet to get a dict of camera's YUYV available resolutions and corresponding FPS values

camera_resolutions.py

import subprocess
import re

sp_out = subprocess.run(
    "v4l2-ctl -d /dev/video0 --list-formats-ext".split(), capture_output=True
)

# format and remove newlines/tabs
output = str(sp_out.stdout).replace("\\n", " ").replace("\\t", "")

# get only yuyv results
yuyv = re.search("\[\d+\]: 'YUYV' \(YUYV \d:\d:\d\) (.+)(\[\d+\]?|$)", output).group(1)

# group 1: resolution
# group 2: everything up until next instance of Size
modes = {}
for match in re.finditer("Size: \w+ (\d+x\d+) ", yuyv):
    resolution = match.group(1)
    # get everything from the current resolution to the next resolution
    line = re.search(match.group(0) + "(.+?)Size", yuyv).group(1)
    fpses = set()
    for interval in re.finditer("nterval: \w+ \d+\.\d+s \((.+?) fps\)", line):
        fpses.add(float(interval.group(1)))
    modes[resolution] = list(fpses)
print(modes)