ffmpeg -ac
时间: 2023-10-22 22:04:17 浏览: 47
FFmpeg is a powerful open-source multimedia framework that provides a command-line tool for various multimedia tasks, including audio and video processing. The option `-ac` in FFmpeg stands for "audio channels" and is used to specify the desired number of audio channels in the output.
You can use the `-ac` option followed by an integer value to set the number of audio channels. For example, if you want to convert a stereo audio file to mono, you can use `-ac 1` to downmix it to a single channel.
Here's an example command using FFmpeg with the `-ac` option:
```
ffmpeg -i input.mp3 -ac 1 output.mp3
```
This command takes an input audio file `input.mp3` and converts it to a mono audio file `output.mp3` by specifying `-ac 1` to set the number of audio channels to 1.
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