将音频重新采样为16kHz

warning

我们正在逐步淘汰 Remotion WebCodecs，并转向 Mediabunny！

要使用 Whisper、Whisper.cpp、@remotion/install-whisper-cpp 和 Whisper.wasm，你需要提供一个 16 位、16KHz 的 WAVE 音频文件。

🌐 For using Whisper, Whisper.cpp, @remotion/install-whisper-cpp and Whisper.wasm, you need to provide a 16-bit, 16KHz, WAVE audio file.

本页面介绍了在浏览器和服务器上转换音频的方法。

🌐 This page describes approaches for converting your audio in the browser and on the server.

在浏览器中

🌐 In the browser

你可以使用convertMedia()将任何支持的视频和音频格式转换并重采样到16kHz。

🌐 You can use convertMedia() to convert any of the supported video and audio formats and resample it to 16kHz.

💼 重要的 @remotion/webcodecs 许可证免责声明

This package is licensed under the Remotion License.
We consider a team of 4 or more people a "company".

For "companies": A Remotion Company license needs to be obtained to use this package.
In a future version of @remotion/webcodecs, this package will also require the purchase of a newly created "WebCodecs Conversion Seat". Get in touch with us if you are planning to use this package.

For individuals and teams up to 3: You can use this package for free.

This is a short, non-binding explanation of our license. See the License itself for more details.

Resample audio to 16kHz
import {convertMedia, canReencodeAudioTrack} from '@remotion/webcodecs';

const output = await convertMedia({
  src: 'https://example.com/input.mp4',
  container: 'wav',
  onAudioTrack: async ({track}) => {
    if (
      await canReencodeAudioTrack({
        audioCodec: 'wav',
        track,
        // Ignore this, bitrate is not used for WAV files
        bitrate: 128000,
        sampleRate: 16000,
      })
    ) {
      return {
        type: 'reencode',
        audioCodec: 'wav',
        bitrate: 128000,
        sampleRate: 16000,
      };
    }

    // If this conversion is not supported, return an error
    return {
      type: 'fail',
    };
  },
});

const blob = await output.save(); // returns a `Blob`

在服务器上

🌐 On the server

你可以使用 ffmpeg 将你的音频转换为 16 位、16KHz 的 WAVE 文件。

🌐 You can use ffmpeg to convert your audio to a 16-bit, 16KHz, WAVE file.

ffmpeg -i /path/to/audio.mp4 -ar 16000 /path/to/audio.wav -y

如果你不想安装 FFmpeg，你也可以使用 Remotion 提供的较小的 FFmpeg 可执行文件。

🌐 If you don't want to install FFmpeg, you can also use the smaller FFmpeg binary provided by Remotion.

npx remotion ffmpeg -i input.mp4 -ar 16000 output.wav -y

在浏览器中​

在服务器上​

在浏览器中

在服务器上