n8n-nodes-mediafx
Version:
N8N custom nodes for video editing and media processing
58 lines (57 loc) • 2.55 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.executeExtractAudio = void 0;
const n8n_workflow_1 = require("n8n-workflow");
const ffmpeg = require("fluent-ffmpeg");
const utils_1 = require("../utils");
const fs = __importStar(require("fs-extra"));
async function executeExtractAudio(input, format, codec, bitrate, itemIndex) {
const outputPath = (0, utils_1.getTempFile)(`.${format}`);
let finalCodec = codec;
// If stream copy ('copy') is selected for a format that requires a specific
// codec (like mp3), we must override it to prevent an FFmpeg error.
if (finalCodec === 'copy' && format === 'mp3') {
// Cannot stream copy a non-mp3 stream (e.g., aac) into an mp3 container.
// Default to a high-quality mp3 encoder.
finalCodec = 'libmp3lame';
}
const command = ffmpeg(input)
.output(outputPath)
.noVideo()
.audioCodec(finalCodec)
.audioBitrate(bitrate)
.outputOptions('-map', '0:a:0'); // Select first audio stream
try {
await (0, utils_1.runFfmpeg)(command);
return outputPath;
}
catch (error) {
// Clean up output file if creation failed
await fs.remove(outputPath).catch(() => { });
throw new n8n_workflow_1.NodeOperationError(this.getNode(), `Error extracting audio. Please ensure the source video contains an audio track. FFmpeg error: ${error.message}`, { itemIndex });
}
}
exports.executeExtractAudio = executeExtractAudio;