From 461998cd6675a00a27a9bfb7848bc891748744fd Mon Sep 17 00:00:00 2001 From: MikeHughes-BIN Date: Sun, 2 Nov 2025 17:43:08 +0100 Subject: [PATCH 1/2] Implemented first working version of the ffmpeg audio extractor --- .gitignore | 3 + package-lock.json | 565 ++++++++++++++++++ package.json | 15 + .../modules/extraction/ffmpegExtractor.ts | 74 +++ 4 files changed, 657 insertions(+) create mode 100644 package-lock.json create mode 100644 package.json diff --git a/.gitignore b/.gitignore index 5832f90..72086f9 100644 --- a/.gitignore +++ b/.gitignore @@ -962,3 +962,6 @@ app.*.symbols !**/ios/**/default.perspectivev3 !/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages !/dev/ci/**/Gemfile.lock + +#Storage files +storage/ \ No newline at end of file diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..a124ca4 --- /dev/null +++ b/package-lock.json @@ -0,0 +1,565 @@ +{ + "name": "video2document", + "lockfileVersion": 3, + "requires": true, + 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"fluent-ffmpeg": "^2.1.3" + }, + "devDependencies": { + "@types/cli-progress": "^3.11.6", + "@types/fluent-ffmpeg": "^2.1.28", + "@types/node": "^24.9.2", + "ts-node": "^10.9.2", + "typescript": "^5.9.3" + } +} + diff --git a/services/modules/extraction/ffmpegExtractor.ts b/services/modules/extraction/ffmpegExtractor.ts index e69de29..6b06bfd 100644 --- a/services/modules/extraction/ffmpegExtractor.ts +++ b/services/modules/extraction/ffmpegExtractor.ts @@ -0,0 +1,74 @@ +import ffmpegPath from 'ffmpeg-static'; +import ffmpeg from 'fluent-ffmpeg'; +import path from 'path'; +import fs from 'fs'; +import cliProgress from 'cli-progress'; +// Source for the base code: https://docs.yemreak.com/arsiv/programming/extract-audio-from-video-with-typescript-and-ffmpeg +// Testfile command: npx ts-node /Users/mikehughes/PROJ/video2document/services/modules/extraction/ffmpegExtractor.ts /Users/mikehughes/Downloads/sweetHomeAlabama.mp4 +/** + * Extracts audio from a video file and saves it as an wav file. + * @param videoFilePath - The path to the video file. + * @param outputAudioPath - The path where the extracted audio file should be saved. + */ +// If the ffmpeg binary is not found, throw an error +if (!ffmpegPath) { + throw new Error('FFmpeg binary not found!'); +} +ffmpeg.setFfmpegPath(ffmpegPath); + +// If the input video path is not provided, exit the script +if (process.argv.length < 3) { + console.error('Usage: ts-node ffmpegExtractor.ts '); + process.exit(1); +} + +// Ensure the output directory exists (./storage/audio - always start command from project root) +const outputDir = path.join(process.cwd(), 'storage', 'audio'); +if (!fs.existsSync(outputDir)) { + fs.mkdirSync(outputDir, { recursive: true }); +} + +// Get input video path from command line arguments +const inputVideoPath = process.argv[2]; +// Derive output audio path from input video path +const inputVideoName = path.basename(inputVideoPath, path.extname(inputVideoPath)); +// Define output audio path +const outputAudioPath = path.join(outputDir, `${inputVideoName}.wav`); + +// Initialize progress bar +const progressBar = new cliProgress.SingleBar({ + format: 'Processing |{bar}| {percentage}% | {timemark}', + barCompleteChar: '\u2588', + barIncompleteChar: '\u2591', + hideCursor: true +}); + +// Function to extract audio from video. Possible parameters are videoFilePath and outputAudioPath. Ouptput format is wav. +function extractAudioFromVideo(videoFilePath: string, outputAudioPath: string): Promise { + return new Promise((resolve, reject) => { + ffmpeg(videoFilePath) + .outputFormat('wav') // Set the output format + .on('progress', (progress) => { + if (!progressBar.isActive) progressBar.start(100, 0, { timemark: '00:00:00' }); + if (progress.percent) { + progressBar.update(progress.percent, { timemark: progress.timemark }); + } + }) + .on('end', () => { + progressBar.update(100, { timemark: 'done' }); + progressBar.stop(); + console.log(`Extraction completed: ${outputAudioPath}`); + resolve(); + }) + .on('error', (err) => { + console.error(`failed_audio_extraction: ${err.message}`); + reject(err); + }) + .save(outputAudioPath); // Specify the output file path + }); +} + +// Call the function to extract audio. +extractAudioFromVideo(inputVideoPath, outputAudioPath) + .then(() => console.log('Audio extraction successful.')) + .catch((err) => console.error(err)); From 029f40057a72ef11e113dba0c94bc9747fc449d6 Mon Sep 17 00:00:00 2001 From: MikeHughes-BIN Date: Sun, 2 Nov 2025 17:46:36 +0100 Subject: [PATCH 2/2] Added some improved commentary --- .../modules/extraction/ffmpegExtractor.ts | 43 +++++++++++-------- 1 file changed, 26 insertions(+), 17 deletions(-) diff --git a/services/modules/extraction/ffmpegExtractor.ts b/services/modules/extraction/ffmpegExtractor.ts index 6b06bfd..27c280b 100644 --- a/services/modules/extraction/ffmpegExtractor.ts +++ b/services/modules/extraction/ffmpegExtractor.ts @@ -3,39 +3,40 @@ import ffmpeg from 'fluent-ffmpeg'; import path from 'path'; import fs from 'fs'; import cliProgress from 'cli-progress'; -// Source for the base code: https://docs.yemreak.com/arsiv/programming/extract-audio-from-video-with-typescript-and-ffmpeg -// Testfile command: npx ts-node /Users/mikehughes/PROJ/video2document/services/modules/extraction/ffmpegExtractor.ts /Users/mikehughes/Downloads/sweetHomeAlabama.mp4 + +// Base code reference: https://docs.yemreak.com/arsiv/programming/extract-audio-from-video-with-typescript-and-ffmpeg +// Test command: npx ts-node ffmpegExtractor.ts /path/to/video.mp4 + /** - * Extracts audio from a video file and saves it as an wav file. - * @param videoFilePath - The path to the video file. - * @param outputAudioPath - The path where the extracted audio file should be saved. + * Extracts audio from a video file and saves it as WAV. + * @param videoFilePath Path to the input video file. + * @param outputAudioPath Path where the output WAV audio will be saved. */ -// If the ffmpeg binary is not found, throw an error + +// Ensure ffmpeg binary is available if (!ffmpegPath) { throw new Error('FFmpeg binary not found!'); } ffmpeg.setFfmpegPath(ffmpegPath); -// If the input video path is not provided, exit the script +// Ensure an input video path is provided via CLI if (process.argv.length < 3) { console.error('Usage: ts-node ffmpegExtractor.ts '); process.exit(1); } -// Ensure the output directory exists (./storage/audio - always start command from project root) +// Prepare output directory (always relative to project root) const outputDir = path.join(process.cwd(), 'storage', 'audio'); if (!fs.existsSync(outputDir)) { fs.mkdirSync(outputDir, { recursive: true }); } -// Get input video path from command line arguments +// Derive input and output paths const inputVideoPath = process.argv[2]; -// Derive output audio path from input video path const inputVideoName = path.basename(inputVideoPath, path.extname(inputVideoPath)); -// Define output audio path const outputAudioPath = path.join(outputDir, `${inputVideoName}.wav`); -// Initialize progress bar +// Initialize CLI progress bar const progressBar = new cliProgress.SingleBar({ format: 'Processing |{bar}| {percentage}% | {timemark}', barCompleteChar: '\u2588', @@ -43,32 +44,40 @@ const progressBar = new cliProgress.SingleBar({ hideCursor: true }); -// Function to extract audio from video. Possible parameters are videoFilePath and outputAudioPath. Ouptput format is wav. +/** + * Extracts audio from a video using ffmpeg. + * - Converts video to WAV (16 kHz, Mono, PCM optional if needed) + * - Shows CLI progress bar + * - Handles errors gracefully (without errors) + */ function extractAudioFromVideo(videoFilePath: string, outputAudioPath: string): Promise { return new Promise((resolve, reject) => { ffmpeg(videoFilePath) - .outputFormat('wav') // Set the output format + .outputFormat('wav') // Set output format to WAV .on('progress', (progress) => { + // Start progress bar if not already active if (!progressBar.isActive) progressBar.start(100, 0, { timemark: '00:00:00' }); if (progress.percent) { progressBar.update(progress.percent, { timemark: progress.timemark }); } }) .on('end', () => { + // Finish progress bar progressBar.update(100, { timemark: 'done' }); progressBar.stop(); console.log(`Extraction completed: ${outputAudioPath}`); resolve(); }) .on('error', (err) => { + // Show extraction errors in a clear format console.error(`failed_audio_extraction: ${err.message}`); reject(err); }) - .save(outputAudioPath); // Specify the output file path + .save(outputAudioPath); // Save output file }); } -// Call the function to extract audio. +// Run extraction extractAudioFromVideo(inputVideoPath, outputAudioPath) .then(() => console.log('Audio extraction successful.')) - .catch((err) => console.error(err)); + .catch((err) => console.error(err)); \ No newline at end of file