{"id":51144739,"url":"https://github.com/youtube-transcript-dev/dart-sdk","last_synced_at":"2026-06-26T02:00:44.083Z","repository":{"id":339017098,"uuid":"1160106370","full_name":"Youtube-Transcript-Dev/dart-sdk","owner":"Youtube-Transcript-Dev","description":"Official Dart/Flutter SDK for YouTubeTranscript.dev — extract, transcribe, and translate YouTube video 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align=\"center\"\u003e\n  \u003ca href=\"https://www.youtubetranscript.dev\"\u003e\n    \u003cimg src=\"https://www.youtubetranscript.dev/logo.svg\" width=\"80\" height=\"80\" alt=\"YouTubeTranscript.dev logo\" /\u003e\n  \u003c/a\u003e\n\u003c/p\u003e\n\n\u003ch1 align=\"center\"\u003eyoutubetranscript\u003c/h1\u003e\n\n\u003cp align=\"center\"\u003e\n  \u003cstrong\u003eOfficial Dart/Flutter SDK for \u003ca href=\"https://www.youtubetranscript.dev\"\u003eYouTubeTranscript.dev\u003c/a\u003e\u003c/strong\u003e\u003cbr /\u003e\n  Extract, transcribe, and translate YouTube video transcripts with a single function call.\n\u003c/p\u003e\n\n\u003cp align=\"center\"\u003e\n  \u003ca href=\"https://pub.dev/packages/youtubetranscript\"\u003e\u003cimg src=\"https://img.shields.io/pub/v/youtubetranscript.svg\" alt=\"pub version\" /\u003e\u003c/a\u003e\n  \u003ca href=\"https://pub.dev/packages/youtubetranscript/score\"\u003e\u003cimg src=\"https://img.shields.io/badge/pub%20points-160%2F160-brightgreen\" alt=\"pub points\" /\u003e\u003c/a\u003e\n  \u003ca href=\"https://pub.dev/packages/youtubetranscript\"\u003e\u003cimg src=\"https://img.shields.io/pub/likes/youtubetranscript\" alt=\"likes\" /\u003e\u003c/a\u003e\n  \u003ca href=\"https://opensource.org/licenses/MIT\"\u003e\u003cimg src=\"https://img.shields.io/badge/license-MIT-blue.svg\" alt=\"license\" /\u003e\u003c/a\u003e\n\u003c/p\u003e\n\n---\n\n## Why youtubetranscript?\n\n- **Captions + ASR** — Extracts existing captions or transcribes audio when none are available\n- **100+ languages** — Translate any transcript on the fly\n- **Batch processing** — Up to 100 videos in a single request\n- **Export anywhere** — SRT, WebVTT, plain text, timestamped text\n- **Built-in search** — Find keywords across transcript segments\n- **Typed exceptions** — Granular error handling with `NoCaptionsException`, `RateLimitException`, etc.\n- **Automatic retries** — Resilient HTTP layer with configurable retry on 5xx errors\n- **Flutter ready** — Works in any Dart app, ships with an example Flutter widget\n\n## Installation\n\n```bash\ndart pub add youtubetranscript\n```\n\nOr add it manually to your `pubspec.yaml`:\n\n```yaml\ndependencies:\n  youtubetranscript: ^0.1.0\n```\n\n## Quick Start\n\n```dart\nimport 'package:youtubetranscript/youtubetranscript.dart';\n\nvoid main() async {\n  final yt = YouTubeTranscript('your_api_key');\n\n  // Extract transcript\n  final result = await yt.transcribe('dQw4w9WgXcQ');\n\n  print('${result.segments.length} segments, ${result.wordCount} words');\n\n  for (final seg in result.segments) {\n    print('[${seg.startFormatted}] ${seg.text}');\n  }\n\n  yt.close();\n}\n```\n\n\u003e Get your free API key at [youtubetranscript.dev/dashboard](https://www.youtubetranscript.dev/dashboard)\n\n## Features\n\n### Translate to 100+ Languages\n\n```dart\nfinal spanish = await yt.transcribe('dQw4w9WgXcQ', language: 'es');\nfinal japanese = await yt.transcribe('dQw4w9WgXcQ', language: 'ja');\n```\n\n### ASR Audio Transcription\n\nFor videos without captions — transcribe directly from audio:\n\n```dart\nfinal job = await yt.transcribeAsr('video_id');\nfinal result = await yt.waitForJob(job.jobId); // polls until done\nprint(result.text);\n```\n\n### Batch Processing\n\nProcess up to 100 videos in one request:\n\n```dart\nfinal batch = await yt.batch(['video1', 'video2', 'video3']);\nfor (final t in batch.completed) {\n  print('${t.videoId}: ${t.wordCount} words');\n}\n```\n\n### Export Formats\n\n```dart\nresult.toSrt();              // SRT subtitles\nresult.toVtt();              // WebVTT subtitles\nresult.toPlainText();        // Plain text\nresult.toTimestampedText();  // [MM:SS] text\n```\n\n### Search Within Transcripts\n\n```dart\nfinal matches = result.search('keyword');\nfor (final seg in matches) {\n  print('[${seg.startFormatted}] ${seg.text}');\n}\n```\n\n### Account Stats\n\n```dart\nfinal stats = await yt.stats();\nprint('Plan: ${stats.plan}');\nprint('Credits remaining: ${stats.creditsRemaining}');\n```\n\n## Error Handling\n\nEvery API error maps to a typed exception so you can handle each case precisely:\n\n```dart\ntry {\n  final result = await yt.transcribe('video_id');\n} on NoCaptionsException {\n  // No captions available — fall back to ASR\n  final job = await yt.transcribeAsr('video_id');\n  final result = await yt.waitForJob(job.jobId);\n} on AuthenticationException {\n  print('Invalid API key — check youtubetranscript.dev/dashboard');\n} on InsufficientCreditsException {\n  print('Out of credits — top up at youtubetranscript.dev/pricing');\n} on RateLimitException catch (e) {\n  print('Rate limited — retry after ${e.retryAfter}s');\n} on YouTubeTranscriptException catch (e) {\n  print('API error: ${e.message}');\n}\n```\n\n## Flutter Widget\n\nA ready-to-use `TranscriptViewer` widget is included in the examples — with search, segment listing, and error states:\n\n```dart\nTranscriptViewer(\n  apiKey: 'your_api_key',\n  videoId: 'dQw4w9WgXcQ',\n)\n```\n\nSee [`example/flutter_widget.dart`](example/flutter_widget.dart) for the full source.\n\n## API Reference\n\n| Method | Description |\n|--------|-------------|\n| `transcribe(video, {language, source, format})` | Extract transcript from a video |\n| `transcribeAsr(video, {language, webhookUrl})` | Transcribe from audio (async) |\n| `getJob(jobId)` | Check ASR job status |\n| `waitForJob(jobId, {pollInterval, timeout})` | Poll until ASR job completes |\n| `batch(videoIds, {language})` | Batch extract up to 100 videos |\n| `getBatch(batchId)` | Check batch status |\n| `listTranscripts({search, language})` | Browse transcript history |\n| `getTranscript(videoId)` | Retrieve a saved transcript |\n| `stats()` | Account credits \u0026 usage info |\n| `deleteTranscript({videoId, ids})` | Delete transcripts |\n\n## Credit Costs\n\n| Operation | Cost |\n|-----------|------|\n| Captions extraction | 1 credit |\n| Translation | 1 credit per 2,500 chars |\n| ASR audio transcription | 1 credit per 90 seconds |\n| Re-fetch owned transcript | Free |\n\n## Other SDKs\n\n| Language | Package |\n|----------|---------|\n| Python | [youtubetranscript on PyPI](https://pypi.org/project/youtubetranscript/) |\n| JavaScript/Node | [youtubetranscript on npm](https://www.npmjs.com/package/youtubetranscript) |\n| Dart/Flutter | **You are here** |\n\n## License\n\nMIT — see [LICENSE](LICENSE)\n\n## Links\n\n- [Website](https://www.youtubetranscript.dev)\n- [API Documentation](https://www.youtubetranscript.dev/api-docs)\n- [Dashboard \u0026 API Key](https://www.youtubetranscript.dev/dashboard)\n- [GitHub](https://github.com/Youtube-Transcript-Dev/dart-sdk)\n- [pub.dev](https://pub.dev/packages/youtubetranscript)\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fyoutube-transcript-dev%2Fdart-sdk","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fyoutube-transcript-dev%2Fdart-sdk","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fyoutube-transcript-dev%2Fdart-sdk/lists"}