29 lines
888 B
JavaScript
29 lines
888 B
JavaScript
import { ffmpeg } from './ffmpeg';
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class MP3EncodingError extends Error {
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constructor(message) {
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super(message);
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this.name = 'MP3EncodingError';
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this.code = 'MP3_ENCODING_FAILED';
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}
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}
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export async function encodeToMp3(audioBlob, onProgress = null, signal = null) {
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try {
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// Use Web Worker for non-blocking FFmpeg encoding
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if (typeof Worker !== 'undefined') {
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const args = ['-map_metadata', '-1', '-c:a', 'libmp3lame', '-b:a', '320k', '-ar', '44100'];
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return await ffmpeg(audioBlob, { args }, 'output.mp3', 'audio/mpeg', onProgress, signal);
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}
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throw new MP3EncodingError('Web Workers are required for MP3 encoding');
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} catch (error) {
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console.error('MP3 encoding failed:', error);
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throw new MP3EncodingError(error?.message ?? error);
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}
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}
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export { MP3EncodingError };
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