write_to_movie option failed in manim.cfg

[LingrenKong]

Description of bug / unexpected behavior

write_to_movie option in manim.cfg cannot be detected. but the command line --write_to_movie works

Expected behavior

if we write write_to_movie = True in manim.cfg and use it as config file, then we don't need to use --write_to_movie

How to reproduce the issue

run these two comman line:

 manim main.py -c manim.cfg
 manim main.py -c manim.cfg --write_to_movie

main.py

```py from manim import * class DefaultTemplate(Scene): def construct(self): circle = Circle() # create a circle circle.set_fill(PINK, opacity=0.5) # set color and transparency square = Square() # create a square square.flip(RIGHT) # flip horizontally square.rotate(-3 * TAU / 8) # rotate a certain amount self.play(Create(square)) # animate the creation of the square self.play(Transform(square, circle)) # interpolate the square into the circle self.play(FadeOut(square)) # fade out animation ```

manim.cfg

``` renderer = opengl write_to_movie = True preview = True ```

Additional media files

Logs

System specifications

System Details

- OS (with version, e.g., Windows 10 v2004 or macOS 10.15 (Catalina)): Windows 11 - RAM: - Python version (`python/py/python3 --version`):Python 3.8.12 - Installed modules (provide output from `pip list`): ``` Package Version Location ------------------------------ --------- ---------------------------------------- azure-cognitiveservices-speech 1.22.0 backcall 0.2.0 certifi 2021.10.8 cffi 1.15.0 charset-normalizer 2.0.7 click 8.0.3 click-default-group 1.2.2 cloup 0.13.1 colorama 0.4.4 colour 0.1.5 commonmark 0.9.1 comtypes 1.1.11 debugpy 1.5.1 decorator 5.1.0 entrypoints 0.3 glcontext 2.3.4 gTTS 2.2.4 idna 3.3 ipdb 0.13.9 ipykernel 6.4.2 ipython 7.29.0 ipython-genutils 0.2.0 isosurfaces 0.1.0 jedi 0.18.0 jupyter-client 7.0.6 jupyter-core 4.9.1 manim 0.15.2 manim-fontawesome 6.0.0 manim-physics 0.2.4 manim-speech 0.0.1 e:\manim视频\测试-speech插件\manim-speech-main ManimPango 0.4.1 mapbox-earcut 0.12.10 matplotlib-inline 0.1.3 moderngl 5.6.4 moderngl-window 2.4.0 multipledispatch 0.6.0 mutagen 1.45.1 nest-asyncio 1.5.1 networkx 2.6.3 numpy 1.21.3 parso 0.8.2 pickleshare 0.7.5 Pillow 8.4.0 pip 21.0.1 prompt-toolkit 3.0.21 pycairo 1.20.1 pycparser 2.21 pydub 0.25.1 pyglet 1.5.21 Pygments 2.10.0 pymunk 6.2.1 PyOpenGL 3.1.6 pypiwin32 223 pyrr 0.10.3 python-dateutil 2.8.2 python-dotenv 0.20.0 pyttsx3 2.90 pywin32 302 pyzmq 22.3.0 requests 2.26.0 rich 10.12.0 scipy 1.8.1 screeninfo 0.8 setuptools 58.0.4 Shapely 1.8.2 six 1.16.0 skia-pathops 0.7.1 sox 1.4.1 srt 3.5.2 toml 0.10.2 tornado 6.1 tqdm 4.62.3 traitlets 5.1.1 typing-extensions 4.2.0 urllib3 1.26.7 watchdog 2.1.6 wcwidth 0.2.5 wheel 0.37.0 wincertstore 0.2 ```

Additional comments

[LingrenKong]

update config in python also works fine, but default write_to_movie option cannot write in opengl mode

config['write_to_movie'] = True

[SolidTux]

The same thing also happens for me with format.

[ad-chaos]

Yeah, not all cli options are accessible via manim.cfg, I am afraid it will stay that way because I do not see any easy way to add that within the current config system.

[SolidTux]

Is there a place in the documentation with a list of options that can or cannot be changed?

[ad-chaos]

You can take a look at the _OPTS set here https://github.com/ManimCommunity/manim/blob/a20f8aeb6ccd30d6b9d5c34285c3a718b0f5a59b/manim/_config/utils.py#L245

Also, it looks like write to movie is always overridden. https://github.com/ManimCommunity/manim/blob/a20f8aeb6ccd30d6b9d5c34285c3a718b0f5a59b/manim/_config/utils.py#L794-L796

[LingrenKong]

You can take a look at the _OPTS set here

https://github.com/ManimCommunity/manim/blob/a20f8aeb6ccd30d6b9d5c34285c3a718b0f5a59b/manim/_config/utils.py#L245

Also, it looks like write to movie is always overridden.

https://github.com/ManimCommunity/manim/blob/a20f8aeb6ccd30d6b9d5c34285c3a718b0f5a59b/manim/_config/utils.py#L794-L796

So the reason for this bug is: some command line args use default value, and command has highest level in the cascading config system. Okay, now I understand.

Thanks.