distutils.spawn.find_executable not working to find ffmpeg

[hubutui]

🐛 Describe the bug

distutils.spawn.find_executable not working to find ffmpeg

Versions

vision/setup.py

Line 343 in e8cb0ba

ffmpeg_exe = distutils.spawn.find_executable("ffmpeg")

for python 3.10,

import distutils
distutils.spawn.find_executable("ffmpeg")

outputs:

Traceback (most recent call last):
  File "<input>", line 1, in <module>
    distutils.spawn.find_executable("ffmpeg")
AttributeError: module 'distutils' has no attribute 'spawn'

so ffmpeg_exe = distutils.spawn.find_executable("ffmpeg") leads to ffmpeg_exe = None
use this instead:

from distutils import spawn
spawn.find_executable('ffmpeg')

also,

DeprecationWarning: The distutils package is deprecated an
d slated for removal in Python 3.12. Use setuptools or check PEP 632 for potent
ial alternatives

[bjuncek]

@datumbox thanks for flagging, I'll take the liberty to replace this with shutil.which as it's recommended in PEP632 migration advice

[bjuncek]

Closed via #5849