AttributeError: 'NoneType' object has no attribute 'groups'

[mlinaje]

Hi,
I'm having this problem while trying to use your code from the powershell in windows 10. I use python and I have installed unsilence for the CLI and as library.
I don't get the traceback as when error with other python programs occur. So, I used "-d" and I got:

File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.8_3.8.1264.0_x64__qbz5n2kfra8p0\lib\runpy.py", line 194, in _run_module_as_main
return _run_code(code, main_globals, None,
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.8_3.8.1264.0_x64__qbz5n2kfra8p0\lib\runpy.py", line 87, in run_code
exec(code, run_globals)
File "C:\Users\usuario2\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\Scripts\unsilence.exe_main.py", line 7, in
File "C:\Users\usuario2\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\unsilence\command_line\EntryPoint.py", line 20, in main
run()
File "C:\Users\usuario2\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\unsilence\command_line\EntryPoint.py", line 66, in run
continual = Unsilence(args.input_file)
File "C:\Users\usuario2\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\unsilence\Unsilence.py", line 27, in init
ffmpeg_version = get_ffmpeg_version()
File "C:\Users\usuario2\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\unsilence\lib\tools\ffmpeg_version.py", line 16, in get_ffmpeg_version
groups = match.groups()
AttributeError: 'NoneType' object has no attribute 'groups'

Thanks for your contribution. I'm currently using jumcutterv2 and auto-editor and it would be awesome to test your code against my set of teaching videos.

Best,

[lagmoellertim]

Hey, it seems like the ffmpeg version detector does not find a matching ffmpeg version.
Could you check if the ffmpeg version is >4.2.0 and that it is globally available?
If that doesn't fix the problem, could you send me the output of ffmpeg -version?

[mlinaje]

Thanks,
It's in the PATH (it's working and I checked it).
This is the output (I update it trying to make it work):

PS C:\Users\usuario2> ffmpeg -version
ffmpeg version git-2020-07-16-d11cc74 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 9.3.1 (GCC) 20200621
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libgsm --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
libavutil 56. 55.100 / 56. 55.100
libavcodec 58. 96.100 / 58. 96.100
libavformat 58. 48.100 / 58. 48.100
libavdevice 58. 11.101 / 58. 11.101
libavfilter 7. 87.100 / 7. 87.100
libswscale 5. 8.100 / 5. 8.100
libswresample 3. 8.100 / 3. 8.100
libpostproc 55. 8.100 / 55. 8.100

Best,

[AtilioA]

Hey, it seems like the ffmpeg version detector does not find a matching ffmpeg version.
Could you check if the ffmpeg version is >4.2.0 and that it is globally available?
If that doesn't fix the problem, could you send me the output of ffmpeg -version?

@lagmoellertim This has to do with the regex. It doesn't properly parse FFmpeg's string. Now take a look at this one: https://regex101.com/r/lO6pxG/1
I'm using FFmpeg 3.7 and the regex couldn't match it, leading to the NoneType exception.

I'll be opening a PR to fix this.

[mlinaje]

I did a git fetch and reinstall it using pip install --ignore-installed .
but the same message appears in the commandline.
After the issue detected by @AtilioA (thanks!) I tried ffmpeg_version.py from the command line with the following output in the python console:

> >>> import subprocess
> >>> console_output = subprocess.run(
> ...             ["ffmpeg", "-version"],
> ...             stdout=subprocess.PIPE,
> ...             stderr=subprocess.STDOUT,
> ...         ).stdout
> >>> import re
> >>> regex = r"ffmpeg version \D?(\d+(?:\.\d+)*)"
> >>> match = re.search(regex, str(console_output))
> >>> groups = match.groups()
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> AttributeError: 'NoneType' object has no attribute 'groups'

Recommended downloads of ffmpeg for windows are at https://ffmpeg.zeranoe.com/builds/ and default download is last git version. So, my version is: git-2020-07-16-d11cc74

Solution: I downloadade the lastest release (not git version, 4.3 at the moment) choosing it from the dropdown list top-left and reinstalled it. Now unsilence detects 4.3 version and it working. The output is:

> >>> version = groups[0].split(".")
> >>> print (version)
> ['4', '3']

I have just included this information for other Windows users with the same issues.
Best,