我已经使用 Manim 大约一个月了，由于我的进步已经存在障碍，当我到达贝多芬定理教程的这一部分时，没有什么比缺乏声音更痛苦的了。我已经为此苦苦挣扎了三个星期，并在 GitHub 和 Reddit 上提出了问题，但没有成功。
所以代码如下所示：
class AudioTest(Scene):
def construct(self):
group_dots=VGroup(*[Dot()for _ in range(3)])
group_dots.arrange_submobjects(RIGHT)
for dot in group_dots:
self.add_sound("click_this_and_nothing_else",gain=-10)
self.add(dot)
self.wait()
self.wait()
错误消息有点长，我仍在研究它的实际含义。这是：
C:\Manim\manim-18june>python manim.py tutorial\7_add_audio.py AudioTest -pm
Media will be written to C:/Users/NeoPlato/Videos/manim_videos\. You can change this behavior with the --media_dir flag.
Traceback (most recent call last):
File "C:\Manim\manim-18june\manimlib\extract_scene.py", line 155, in main
scene = SceneClass(**scene_kwargs)
File "C:\Manim\manim-18june\manimlib\scene\scene.py", line 79, in __init__
self.file_writer.finish()
File "C:\Manim\manim-18june\manimlib\scene\scene_file_writer.py", line 379, in finish
self.combine_movie_files()
File "C:\Manim\manim-18june\manimlib\scene\scene_file_writer.py", line 506, in combine_movie_files
self.audio_segment.export(
File "C:\Users\allan\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pydub\audio_segment.py", line 911, in export
raise CouldntEncodeError(
pydub.exceptions.CouldntEncodeError: Encoding failed. ffmpeg/avlib returned error code: 1
Command:['ffmpeg', '-y', '-f', 'wav', '-i', 'C:\\Users\\NEOPLATO~1.000\\AppData\\Local\\Temp\\tmpk6j8yj98', '-b:a', '312k', '-f', 'mp3', 'C:\\Users\\NEOPLATO~1.000\\AppData\\Local\\Temp\\tmpyn225uxk']
Output from ffmpeg/avlib:
ffmpeg version git-2020-06-17-0b3bd00 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 9.3.1 (GCC) 20200523
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 --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. 92.100 / 58. 92.100
libavformat 58. 46.101 / 58. 46.101
libavdevice 58. 11.100 / 58. 11.100
libavfilter 7. 86.100 / 7. 86.100
libswscale 5. 8.100 / 5. 8.100
libswresample 3. 8.100 / 3. 8.100
libpostproc 55. 8.100 / 55. 8.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, wav, from 'C:\Users\NEOPLATO~1.000\AppData\Local\Temp\tmpk6j8yj98':
Duration: 00:00:04.23, bitrate: 2822 kb/s
Stream #0:0: Audio: pcm_s32le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s32, 2822 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (pcm_s32le (native) -> mp3 (mp3_mf))
Press [q] to stop, [?] for help
[mp3_mf @ 011be000] could not find any MFT for the given media type
[mp3_mf @ 011be000] could not create MFT
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
Conversion failed!
I do have a larger documentation of the problem with current progress [over at GitHub](https://github.com/3b1b/manim/issues/1152)
>Help
>>Me
>>>Please :(
>>>>Pardon my naive looking formatting, I'm new to Markdown
我想，已经晚了，但就在这里。
截至目前更新到 manim 社区的最新版本
Manim Community v0.4.0只需使用
self.add_sound(filename, gain)最新版本实现了add_sound方法。
-c:a libmp3lame您的
ffmpeg也许自从提出这些问题以来，mp3_mf已经有所改进，所以如果你真的想使用mp3_mf，那么从 git master 分支更新你的
ffmpeg