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bufferWriter

warning

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

💼 重要许可免责声明
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.
warning

不稳定的 API：写入器接口是实验性的。API 将来可能会发生变化。

@remotion/webcodecs 的一个写入器，写入到可调整大小的内存 ArrayBuffer。

🌐 A writer for @remotion/webcodecs that writes to an in-memory resizable ArrayBuffer.

可用于convertMedia()将转换后的输出写入内存作为缓冲区。

🌐 Can be used for convertMedia() to write the converted output to memory as a buffer.

示例​

🌐 Example

Using bufferWriter
import {convertMedia} from '@remotion/webcodecs';
import {bufferWriter} from '@remotion/webcodecs/buffer';

const result = await convertMedia({
  src: 'https://remotion.media/BigBuckBunny.mp4',
  container: 'webm',
  writer: bufferWriter,
});

const blob = await result.save();

内存限制​

🌐 Memory limitations

bufferWriter 使用一个可调整大小的 ArrayBuffer，最大尺寸为 2GB。如果你的输出文件超过此限制，转换将失败。

🌐 The bufferWriter uses a resizable ArrayBuffer with a maximum size of 2GB. If your output file would exceed this limit, the conversion will fail.

Error handling for large files
import {convertMedia} from '@remotion/webcodecs';
import {bufferWriter} from '@remotion/webcodecs/buffer';

try {
  const result = await convertMedia({
    src: 'very-large-video.mp4',
    container: 'webm',
    writer: bufferWriter,
  });
} catch (error) {
  if ((error as Error).message.includes('Could not create buffer writer')) {
    // Handle case where ArrayBuffer cannot be resized further
    console.log('File too large for buffer writer, consider using webFsWriter');
  }
}

另请参阅​

🌐 See also

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