mirror of
https://gitlab.rlp.net/proj-wise2526-video2document/video2document.git
synced 2026-06-15 18:01:52 +02:00
Implemented audio extractor into IPC call, sooooooo, frontend and backend are now officially linked successfully
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@@ -1,90 +0,0 @@
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import ffmpegPath from 'ffmpeg-static';
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import ffmpeg from 'fluent-ffmpeg';
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import path from 'path';
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import fs from 'fs';
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import cliProgress from 'cli-progress';
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import { fileURLToPath } from 'url';
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// Base code reference: https://docs.yemreak.com/arsiv/programming/extract-audio-from-video-with-typescript-and-ffmpeg
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// Test command: npx ts-node ./extract.ts /path/to/video.mp4
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/**
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* Extracts audio from a video file and saves it as WAV.
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* @param videoFilePath Path to the input video file.
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*/
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// Ensure ffmpeg binary is available
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if (!ffmpegPath) {
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throw new Error('FFmpeg binary not found!');
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}
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ffmpeg.setFfmpegPath(ffmpegPath);
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// Ensure an input video path is provided via CLI
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if (process.argv.length < 3) {
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console.error('Usage: ts-node ./extract.ts <input-video-path>');
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process.exit(1);
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}
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// Resolve __dirname equivalent in ESM
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const __filename = fileURLToPath(import.meta.url);
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const __dirname = path.dirname(__filename);
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// Prepare output directory (always storage/audio under project root)
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const outputDir = path.join(__dirname, '..', '..', '..', 'storage', 'audio');
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if (!fs.existsSync(outputDir)) {
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fs.mkdirSync(outputDir, { recursive: true });
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}
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// Derive input and output paths
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const inputVideoPath = process.argv[2];
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const inputVideoName = path.basename(inputVideoPath, path.extname(inputVideoPath));
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const outputAudioPath = path.join(outputDir, `${inputVideoName}.wav`);
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// Initialize CLI progress bar
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const progressBar = new cliProgress.SingleBar({
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format: 'Processing |{bar}| {percentage}% | {timemark}',
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barCompleteChar: '\u2588',
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barIncompleteChar: '\u2591',
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hideCursor: true
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});
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/**
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* Extracts audio from a video using ffmpeg.
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* - Converts video to WAV (16 kHz, Mono, PCM optional if needed)
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* - Shows CLI progress bar
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* - Handles errors gracefully (without errors)
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*/
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export function extractAudioFromVideo(videoFilePath: string): Promise<void> {
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return new Promise((resolve, reject) => {
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ffmpeg(videoFilePath)
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.outputFormat('wav')
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.audioCodec('pcm_s16le')
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.audioChannels(1)
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.audioFrequency(16000)
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.on('progress', (progress) => {
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if (!progressBar.isActive) progressBar.start(100, 0, { timemark: '00:00:00' });
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if (progress.percent) {
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progressBar.update(progress.percent, { timemark: progress.timemark });
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}
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})
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.on('end', () => {
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progressBar.update(100, { timemark: 'done' });
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progressBar.stop();
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console.log(`Extraction completed: ${outputAudioPath}`);
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resolve();
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})
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.on('error', (err) => {
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progressBar.stop();
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console.error(`failed_audio_extraction: ${err.message}`);
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reject(err);
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})
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.save(outputAudioPath);
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});
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}
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// Run extraction if executed directly from CLI
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if (import.meta.url === `file://${process.argv[1]}`) {
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extractAudioFromVideo(inputVideoPath)
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.then(() => console.log('Audio extraction successful.'))
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.catch((err) => console.error(err));
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}
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