n8n-nodes-mediafx
Version:
N8N custom nodes for video editing and media processing
79 lines (78 loc) • 3.7 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.executeSeparateAudio = 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"));
/**
* Separates audio from video, returning both a muted video and the extracted audio track.
*
* @param input - Path to the input video file
* @param videoFormat - Output format for the muted video (e.g., 'mp4', 'mov')
* @param audioFormat - Output format for the extracted audio (e.g., 'mp3', 'aac', 'wav')
* @param audioCodec - Audio codec to use (e.g., 'copy', 'libmp3lame', 'aac')
* @param audioBitrate - Audio bitrate (e.g., '192k', '320k')
* @param itemIndex - Current item index for error handling
* @returns Object containing paths to both the muted video and extracted audio
*/
async function executeSeparateAudio(input, videoFormat, audioFormat, audioCodec, audioBitrate, itemIndex) {
const mutedVideoPath = (0, utils_1.getTempFile)(`.${videoFormat}`);
const audioOutputPath = (0, utils_1.getTempFile)(`.${audioFormat}`);
let finalAudioCodec = audioCodec;
// 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 (finalAudioCodec === 'copy' && audioFormat === 'mp3') {
finalAudioCodec = 'libmp3lame';
}
try {
// Step 1: Create muted video (remove audio track)
const mutedVideoCommand = ffmpeg(input)
.output(mutedVideoPath)
.noAudio()
.videoCodec('copy'); // Copy video stream without re-encoding
await (0, utils_1.runFfmpeg)(mutedVideoCommand);
// Step 2: Extract audio track
const audioCommand = ffmpeg(input)
.output(audioOutputPath)
.noVideo()
.audioCodec(finalAudioCodec)
.audioBitrate(audioBitrate)
.outputOptions('-map', '0:a:0'); // Select first audio stream
await (0, utils_1.runFfmpeg)(audioCommand);
return {
videoPath: mutedVideoPath,
audioPath: audioOutputPath,
};
}
catch (error) {
// Clean up any created files on error
await fs.remove(mutedVideoPath).catch(() => { });
await fs.remove(audioOutputPath).catch(() => { });
throw new n8n_workflow_1.NodeOperationError(this.getNode(), `Error separating audio from video. Please ensure the source video contains both video and audio tracks. FFmpeg error: ${error.message}`, { itemIndex });
}
}
exports.executeSeparateAudio = executeSeparateAudio;