对于目标为190 VBR且文件扩展名为.mp3而不是.ac3.mp3的文件夹中的文件进行批处理，您可以使用以下代码

将.ac3更改为源音频格式。

Ffmpeg mp3设置

for f in *.ac3 ; do ffmpeg -i "$f" -acodec libmp3lame -q:a 2 "${f%.*}.mp3"; done

似乎没有人使用find，它让您在一行上完成所有操作。基于这个答案和这篇文章

find . -type f -iname "*.webm" -exec bash -c 'FILE="$1"; ffmpeg -i "${FILE}" -vn -ab 128k "${FILE%.webm}.mp3";' _ '{}' \;

对于播客来说，128k对我来说已经足够了。你可以把这个参数调整到其他参数旁边:

-i - input file -vn - Disable video, to make sure no video (including album cover image) is included if the source would be a video file -ar - Set the audio sampling frequency. For output streams it is set by default to the frequency of the corresponding input stream. For input streams this option only makes sense for audio grabbing devices and raw demuxers and is mapped to the corresponding demuxer options. -ac - Set the number of audio channels. For output streams it is set by default to the number of input audio channels. For input streams this option only makes sense for audio grabbing devices and raw demuxers and is mapped to the corresponding demuxer options. So used here to make sure it is stereo (2 channels) -b:a - Converts the audio bitrate to be exact 192kbit per second

此外，这还说明了ffmpeg比特率参数的区别

使用之前的答案，这里是一个别名，通过将以下添加到.bashrc/.zshrc:

alias convert-aac="cd ~/Downloads && aac-to-mp3"

# Convert all .aac files into .mp3 files in the current folder, don't convert if a mp3 file already exists
aac-to-mp3(){
    find . -type f -iname "*.aac" -exec \
        bash -c 'file="$1"; ffmpeg -n -i "$file" -acodec libmp3lame "${file%.aac}.mp3";' _ '{}' \;
}

用法: Convert-aac (shell)

感谢https://stackoverflow.com/a/70339561/2391795, https://stackoverflow.com/a/12952172/2391795和https://unix.stackexchange.com/a/683488/60329

我必须清除我的ffmpeg，然后从一个ppa安装另一个:

sudo apt-get purge ffmpeg
sudo apt-add-repository -y ppa:jon-severinsson/ffmpeg 
sudo apt-get update 
sudo apt-get install ffmpeg

然后转换:

 ffmpeg -i audio.ogg -f mp3 newfile.mp3

https://trac.ffmpeg.org/wiki/Encode/MP3

的VBR编码:

ffmpeg -vn -ar 44100 -ac 2 -q:a 1 -codec:a libmp3lame output.mp3

高质量的Mac OS工作完美!

Ffmpeg -i input.wma -q: 0输出。mp3