jdepoix
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README.md
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README.md
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# YouTube Transcript/Subtitle API (including automatically generated subtitles and subtitle translations)
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[](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=BAENLEW8VUJ6G&source=url) [](https://travis-ci.com/jdepoix/youtube-transcript-api) [](https://coveralls.io/github/jdepoix/youtube-transcript-api?branch=master) [](http://opensource.org/licenses/MIT) [](https://pypi.org/project/youtube-transcript-api/) [](https://pypi.org/project/youtube-transcript-api/)
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This is a python API which allows you to get the transcript/subtitles for a given YouTube video. It also works for automatically generated subtitles, supports translating subtitles and it does not require a headless browser, like other selenium based solutions do!
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## Install
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It is recommended to [install this module by using pip](https://pypi.org/project/youtube-transcript-api/):
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```
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pip install youtube_transcript_api
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```
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If you want to use it from source, you'll have to install the dependencies manually:
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```
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pip install -r requirements.txt
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```
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You can either integrate this module [into an existing application](#api), or just use it via an [CLI](#cli).
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## API
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The easiest way to get a transcript for a given video is to execute:
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```python
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from youtube_transcript_api import YouTubeTranscriptApi
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YouTubeTranscriptApi.get_transcript(video_id)
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```
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This will return a list of dictionaries looking somewhat like this:
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```python
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[
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{
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'text': 'Hey there',
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'start': 7.58,
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'duration': 6.13
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},
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{
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'text': 'how are you',
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'start': 14.08,
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'duration': 7.58
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},
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# ...
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]
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```
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You can also add the `languages` param if you want to make sure the transcripts are retrieved in your desired language (it defaults to english).
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```python
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YouTubeTranscriptApi.get_transcripts(video_ids, languages=['de', 'en'])
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```
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It's a list of language codes in a descending priority. In this example it will first try to fetch the german transcript (`'de'`) and then fetch the english transcript (`'en'`) if it fails to do so. If you want to find out which languages are available first, [have a look at `list_transcripts()`](#list-available-transcripts)
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To get transcripts for a list of video ids you can call:
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```python
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YouTubeTranscriptApi.get_transcripts(video_ids, languages=['de', 'en'])
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```
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`languages` also is optional here.
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### List available transcripts
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If you want to list all transcripts which are available for a given video you can call:
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```python
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transcript_list = YouTubeTranscriptApi.list_transcripts(video_id)
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```
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This will return a `TranscriptList` object which is iterable and provides methods to filter the list of transcripts for specific languages and types, like:
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```python
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transcript = transcript_list.find_transcript(['de', 'en'])
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```
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By default this module always picks manually created transcripts over automatically created ones, if a transcript in the requested language is available both manually created and generated. The `TranscriptList` allows you to bypass this default behaviour by searching for specific transcript types:
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```python
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# filter for manually created transcripts
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transcript = transcript_list.find_manually_created_transcript(['de', 'en'])
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# or automatically generated ones
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transcript = transcript_list.find_generated_transcript(['de', 'en'])
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```
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The methods `find_generated_transcript`, `find_manually_created_transcript`, `find_generated_transcript` return `Transcript` objects. They contain metadata regarding the transcript:
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```python
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print(
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transcript.video_id,
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transcript.language,
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transcript.language_code,
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# whether it has been manually created or generated by YouTube
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transcript.is_generated,
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# whether this transcript can be translated or not
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transcript.is_translatable,
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# a list of languages the transcript can be translated to
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transcript.translation_languages,
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)
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```
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and provide the method, which allows you to fetch the actual transcript data:
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```python
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transcript.fetch()
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```
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### Translate transcript
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YouTube has a feature which allows you to automatically translate subtitles. This module also makes it possible to access this feature. To do so `Transcript` objects provide a `translate()` method, which returns a new translated `Transcript` object:
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```python
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transcript = transcript_list.find_transcript(['en'])
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translated_transcript = transcript.translate('de')
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print(translated_transcript.fetch())
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```
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### By example
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```python
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# retrieve the available transcripts
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transcript_list = YouTubeTranscriptApi.list_transcripts('video_id')
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# iterate over all available transcripts
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for transcript in transcript_list:
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# the Transcript object provides metadata properties
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print(
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transcript.video_id,
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transcript.language,
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transcript.language_code,
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# whether it has been manually created or generated by YouTube
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transcript.is_generated,
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# whether this transcript can be translated or not
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transcript.is_translatable,
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# a list of languages the transcript can be translated to
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transcript.translation_languages,
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)
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# fetch the actual transcript data
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print(transcript.fetch())
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# translating the transcript will return another transcript object
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print(transcript.translate('en').fetch())
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# you can also directly filter for the language you are looking for, using the transcript list
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transcript = transcript_list.find_transcript(['de', 'en'])
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# or just filter for manually created transcripts
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transcript = transcript_list.find_manually_created_transcript(['de', 'en'])
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# or automatically generated ones
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transcript = transcript_list.find_generated_transcript(['de', 'en'])
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```
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## CLI
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Execute the CLI script using the video ids as parameters and the results will be printed out to the command line:
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```
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youtube_transcript_api <first_video_id> <second_video_id> ...
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```
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The CLI also gives you the option to provide a list of preferred languages:
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```
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youtube_transcript_api <first_video_id> <second_video_id> ... --languages de en
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```
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You can also specify if you want to exclude automatically generated or manually created subtitles:
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```
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youtube_transcript_api <first_video_id> <second_video_id> ... --languages de en --exclude-generated
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youtube_transcript_api <first_video_id> <second_video_id> ... --languages de en --exclude-manually-created
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```
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If you would prefer to write it into a file or pipe it into another application, you can also output the results as json using the following line:
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```
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youtube_transcript_api <first_video_id> <second_video_id> ... --languages de en --json > transcripts.json
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```
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Translating transcripts using the CLI is also possible:
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```
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youtube_transcript_api <first_video_id> <second_video_id> ... --languages en --translate de
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```
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If you are not sure which languages are available for a given video you can call, to list all available transcripts:
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```
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youtube_transcript_api --list-transcripts <first_video_id>
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```
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If a video's ID starts with a hyphen you'll have to mask the hyphen using `\` to prevent the CLI from mistaking it for a argument name. For example to get the transcript for the video with the ID `-abc123` run:
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```
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youtube_transcript_api "\-abc123"
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```
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## Proxy
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You can specify a https/http proxy, which will be used during the requests to YouTube:
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```python
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from youtube_transcript_api import YouTubeTranscriptApi
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YouTubeTranscriptApi.get_transcript(video_id, proxies={"http": "http://user:pass@domain:port", "https": "https://user:pass@domain:port"})
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```
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As the `proxies` dict is passed on to the `requests.get(...)` call, it follows the [format used by the requests library](http://docs.python-requests.org/en/master/user/advanced/#proxies).
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Using the CLI:
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```
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youtube_transcript_api <first_video_id> <second_video_id> --http-proxy http://user:pass@domain:port --https-proxy https://user:pass@domain:port
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```
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## Cookies
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Some videos are age restricted, so this module won't be able to access those videos without some sort of authentication. To do this, you will need to have access to the desired video in a browser. Then, you will need to download that pages cookies into a text file. You can use the Chrome extension [cookies.txt](https://chrome.google.com/webstore/detail/cookiestxt/njabckikapfpffapmjgojcnbfjonfjfg?hl=en) or the Firefox extension [cookies.txt](https://addons.mozilla.org/en-US/firefox/addon/cookies-txt/).
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Once you have that, you can use it with the module to access age-restricted videos' captions like so.
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```python
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from youtube_transcript_api import YouTubeTranscriptApi
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YouTubeTranscriptApi.get_transcript(video_id, cookies='/path/to/your/cookies.txt')
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YouTubeTranscriptApi.get_transcripts([video_id], cookies='/path/to/your/cookies.txt')
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```
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Using the CLI:
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```
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youtube_transcript_api <first_video_id> <second_video_id> --cookies /path/to/your/cookies.txt
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```
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## Warning
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This code uses an undocumented part of the YouTube API, which is called by the YouTube web-client. So there is no guarantee that it won't stop working tomorrow, if they change how things work. I will however do my best to make things working again as soon as possible if that happens. So if it stops working, let me know!
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## Donation
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If this project makes you happy by reducing your development time, you can make me happy by treating me to a cup of coffee :)
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[](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=BAENLEW8VUJ6G&source=url)
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|
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# YouTube Transcript/Subtitle API (including automatically generated subtitles and subtitle translations)
|
||||
|
||||
[](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=BAENLEW8VUJ6G&source=url) [](https://travis-ci.com/jdepoix/youtube-transcript-api) [](https://coveralls.io/github/jdepoix/youtube-transcript-api?branch=master) [](http://opensource.org/licenses/MIT) [](https://pypi.org/project/youtube-transcript-api/) [](https://pypi.org/project/youtube-transcript-api/)
|
||||
|
||||
This is a python API which allows you to get the transcript/subtitles for a given YouTube video. It also works for automatically generated subtitles, supports translating subtitles and it does not require a headless browser, like other selenium based solutions do!
|
||||
|
||||
## Install
|
||||
|
||||
It is recommended to [install this module by using pip](https://pypi.org/project/youtube-transcript-api/):
|
||||
|
||||
```
|
||||
pip install youtube_transcript_api
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```
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||||
|
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If you want to use it from source, you'll have to install the dependencies manually:
|
||||
|
||||
```
|
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pip install -r requirements.txt
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```
|
||||
|
||||
You can either integrate this module [into an existing application](#api), or just use it via an [CLI](#cli).
|
||||
|
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## API
|
||||
|
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The easiest way to get a transcript for a given video is to execute:
|
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|
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```python
|
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from youtube_transcript_api import YouTubeTranscriptApi
|
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|
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YouTubeTranscriptApi.get_transcript(video_id)
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```
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|
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This will return a list of dictionaries looking somewhat like this:
|
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|
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```python
|
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[
|
||||
{
|
||||
'text': 'Hey there',
|
||||
'start': 7.58,
|
||||
'duration': 6.13
|
||||
},
|
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{
|
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'text': 'how are you',
|
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'start': 14.08,
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'duration': 7.58
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},
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# ...
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]
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```
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|
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You can also add the `languages` param if you want to make sure the transcripts are retrieved in your desired language (it defaults to english).
|
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|
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```python
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YouTubeTranscriptApi.get_transcripts(video_ids, languages=['de', 'en'])
|
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```
|
||||
|
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It's a list of language codes in a descending priority. In this example it will first try to fetch the german transcript (`'de'`) and then fetch the english transcript (`'en'`) if it fails to do so. If you want to find out which languages are available first, [have a look at `list_transcripts()`](#list-available-transcripts)
|
||||
|
||||
To get transcripts for a list of video ids you can call:
|
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|
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```python
|
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YouTubeTranscriptApi.get_transcripts(video_ids, languages=['de', 'en'])
|
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```
|
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|
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`languages` also is optional here.
|
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|
||||
### List available transcripts
|
||||
|
||||
If you want to list all transcripts which are available for a given video you can call:
|
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|
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```python
|
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transcript_list = YouTubeTranscriptApi.list_transcripts(video_id)
|
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```
|
||||
|
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This will return a `TranscriptList` object which is iterable and provides methods to filter the list of transcripts for specific languages and types, like:
|
||||
|
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```python
|
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transcript = transcript_list.find_transcript(['de', 'en'])
|
||||
```
|
||||
|
||||
By default this module always picks manually created transcripts over automatically created ones, if a transcript in the requested language is available both manually created and generated. The `TranscriptList` allows you to bypass this default behaviour by searching for specific transcript types:
|
||||
|
||||
```python
|
||||
# filter for manually created transcripts
|
||||
transcript = transcript_list.find_manually_created_transcript(['de', 'en'])
|
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|
||||
# or automatically generated ones
|
||||
transcript = transcript_list.find_generated_transcript(['de', 'en'])
|
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```
|
||||
|
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The methods `find_generated_transcript`, `find_manually_created_transcript`, `find_generated_transcript` return `Transcript` objects. They contain metadata regarding the transcript:
|
||||
|
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```python
|
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print(
|
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transcript.video_id,
|
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transcript.language,
|
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transcript.language_code,
|
||||
# whether it has been manually created or generated by YouTube
|
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transcript.is_generated,
|
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# whether this transcript can be translated or not
|
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transcript.is_translatable,
|
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# a list of languages the transcript can be translated to
|
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transcript.translation_languages,
|
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)
|
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```
|
||||
|
||||
and provide the method, which allows you to fetch the actual transcript data:
|
||||
|
||||
```python
|
||||
transcript.fetch()
|
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```
|
||||
|
||||
### Translate transcript
|
||||
|
||||
YouTube has a feature which allows you to automatically translate subtitles. This module also makes it possible to access this feature. To do so `Transcript` objects provide a `translate()` method, which returns a new translated `Transcript` object:
|
||||
|
||||
```python
|
||||
transcript = transcript_list.find_transcript(['en'])
|
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translated_transcript = transcript.translate('de')
|
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print(translated_transcript.fetch())
|
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```
|
||||
|
||||
### By example
|
||||
```python
|
||||
from youtube_transcript_api import YouTubeTranscriptApi
|
||||
|
||||
# retrieve the available transcripts
|
||||
transcript_list = YouTubeTranscriptApi.list_transcripts('video_id')
|
||||
|
||||
# iterate over all available transcripts
|
||||
for transcript in transcript_list:
|
||||
|
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# the Transcript object provides metadata properties
|
||||
print(
|
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transcript.video_id,
|
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transcript.language,
|
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transcript.language_code,
|
||||
# whether it has been manually created or generated by YouTube
|
||||
transcript.is_generated,
|
||||
# whether this transcript can be translated or not
|
||||
transcript.is_translatable,
|
||||
# a list of languages the transcript can be translated to
|
||||
transcript.translation_languages,
|
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)
|
||||
|
||||
# fetch the actual transcript data
|
||||
print(transcript.fetch())
|
||||
|
||||
# translating the transcript will return another transcript object
|
||||
print(transcript.translate('en').fetch())
|
||||
|
||||
# you can also directly filter for the language you are looking for, using the transcript list
|
||||
transcript = transcript_list.find_transcript(['de', 'en'])
|
||||
|
||||
# or just filter for manually created transcripts
|
||||
transcript = transcript_list.find_manually_created_transcript(['de', 'en'])
|
||||
|
||||
# or automatically generated ones
|
||||
transcript = transcript_list.find_generated_transcript(['de', 'en'])
|
||||
```
|
||||
|
||||
### Using Formatters
|
||||
Formatters are meant to be an additional layer of processing of the transcript you pass it. The goal is to convert the transcript from its Python data type into a consistent string of a given "format". Such as a basic text (`.txt`) or even formats that have a defined specification such as JSON (`.json`), WebVTT format (`.vtt`), Comma-separated format (`.csv`), etc...
|
||||
|
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The `formatters` submodule provides a few basic formatters to wrap around you transcript data in cases where you might want to do something such as output a specific format then write that format to a file. Maybe to backup/store and run another script against at a later time.
|
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|
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We provided a few subclasses of formatters to use:
|
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|
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- JSONFormatter
|
||||
- PrettyPrintFormatter
|
||||
- TextFormatter
|
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- WebVTTFormatter (a basic implementation)
|
||||
|
||||
Here is how to import from the `formatters` module.
|
||||
|
||||
```python
|
||||
# the base class to inherit from when creating your own formatter.
|
||||
from youtube_transcript_api.formatters import Formatter
|
||||
|
||||
# some provided subclasses, each outputs a different string format.
|
||||
from youtube_transcript_api.formatters import JSONFormatter
|
||||
from youtube_transcript_api.formatters import TextFormatter
|
||||
from youtube_transcript_api.formatters import WebVTTFormatter
|
||||
```
|
||||
|
||||
### Provided Formatter Example
|
||||
Lets say we wanted to retrieve a transcript and write that transcript as a JSON file in the same format as the API returned it as. That would look something like this:
|
||||
|
||||
```python
|
||||
# your_custom_script.py
|
||||
|
||||
from youtube_transcript_api import YouTubeTranscriptApi
|
||||
from youtube_transcript_api.formatters import JSONFormatter
|
||||
|
||||
# Must be a single transcript.
|
||||
transcript = YouTubeTranscriptApi.get_transcript(video_id)
|
||||
|
||||
formatter = JSONFormatter()
|
||||
|
||||
# .format_transcript(transcript) turns the transcript into a JSON string.
|
||||
json_formatted = formatter.format_transcript(transcript)
|
||||
|
||||
|
||||
# Now we can write it out to a file.
|
||||
with open('your_filename.json', 'w', encoding='utf-8') as json_file:
|
||||
json_file.write(json_formatted)
|
||||
|
||||
# Now should have a new JSON file that you can easily read back into Python.
|
||||
```
|
||||
|
||||
**Passing extra keyword arguments**
|
||||
|
||||
Since JSONFormatter leverages `json.dumps()` you can also forward keyword arguments into `.format_transcript(transcript)` such as making your file output prettier by forwarding the `indent=2` keyword argument.
|
||||
|
||||
```python
|
||||
json_formatted = JSONFormatter().format_transcript(transcript, indent=2)
|
||||
```
|
||||
|
||||
### Custom Formatter Example
|
||||
You can implement your own formatter class. Just inherit from the `Formatter` base class and ensure you implement the `format_transcript(self, transcript, **kwargs)` and `format_transcripts(self, transcripts, **kwargs)` methods which should ultimately return a string when called on your formatter instance.
|
||||
|
||||
```python
|
||||
|
||||
class MyCustomFormatter(Formatter):
|
||||
def format_transcript(self, transcript, **kwargs):
|
||||
# Do your custom work in here, but return a string.
|
||||
return 'your processed output data as a string.'
|
||||
|
||||
def format_transcripts(self, transcripts, **kwargs):
|
||||
# Do your custom work in here to format a list of transcripts, but return a string.
|
||||
return 'your processed output data as a string.'
|
||||
```
|
||||
|
||||
## CLI
|
||||
|
||||
Execute the CLI script using the video ids as parameters and the results will be printed out to the command line:
|
||||
|
||||
```
|
||||
youtube_transcript_api <first_video_id> <second_video_id> ...
|
||||
```
|
||||
|
||||
The CLI also gives you the option to provide a list of preferred languages:
|
||||
|
||||
```
|
||||
youtube_transcript_api <first_video_id> <second_video_id> ... --languages de en
|
||||
```
|
||||
|
||||
You can also specify if you want to exclude automatically generated or manually created subtitles:
|
||||
|
||||
```
|
||||
youtube_transcript_api <first_video_id> <second_video_id> ... --languages de en --exclude-generated
|
||||
youtube_transcript_api <first_video_id> <second_video_id> ... --languages de en --exclude-manually-created
|
||||
```
|
||||
|
||||
If you would prefer to write it into a file or pipe it into another application, you can also output the results as json using the following line:
|
||||
|
||||
```
|
||||
youtube_transcript_api <first_video_id> <second_video_id> ... --languages de en --format json > transcripts.json
|
||||
```
|
||||
|
||||
Translating transcripts using the CLI is also possible:
|
||||
|
||||
```
|
||||
youtube_transcript_api <first_video_id> <second_video_id> ... --languages en --translate de
|
||||
```
|
||||
|
||||
If you are not sure which languages are available for a given video you can call, to list all available transcripts:
|
||||
|
||||
```
|
||||
youtube_transcript_api --list-transcripts <first_video_id>
|
||||
```
|
||||
|
||||
If a video's ID starts with a hyphen you'll have to mask the hyphen using `\` to prevent the CLI from mistaking it for a argument name. For example to get the transcript for the video with the ID `-abc123` run:
|
||||
|
||||
```
|
||||
youtube_transcript_api "\-abc123"
|
||||
```
|
||||
|
||||
## Proxy
|
||||
|
||||
You can specify a https/http proxy, which will be used during the requests to YouTube:
|
||||
|
||||
```python
|
||||
from youtube_transcript_api import YouTubeTranscriptApi
|
||||
|
||||
YouTubeTranscriptApi.get_transcript(video_id, proxies={"http": "http://user:pass@domain:port", "https": "https://user:pass@domain:port"})
|
||||
```
|
||||
|
||||
As the `proxies` dict is passed on to the `requests.get(...)` call, it follows the [format used by the requests library](http://docs.python-requests.org/en/master/user/advanced/#proxies).
|
||||
|
||||
Using the CLI:
|
||||
|
||||
```
|
||||
youtube_transcript_api <first_video_id> <second_video_id> --http-proxy http://user:pass@domain:port --https-proxy https://user:pass@domain:port
|
||||
```
|
||||
|
||||
## Cookies
|
||||
|
||||
Some videos are age restricted, so this module won't be able to access those videos without some sort of authentication. To do this, you will need to have access to the desired video in a browser. Then, you will need to download that pages cookies into a text file. You can use the Chrome extension [cookies.txt](https://chrome.google.com/webstore/detail/cookiestxt/njabckikapfpffapmjgojcnbfjonfjfg?hl=en) or the Firefox extension [cookies.txt](https://addons.mozilla.org/en-US/firefox/addon/cookies-txt/).
|
||||
|
||||
Once you have that, you can use it with the module to access age-restricted videos' captions like so.
|
||||
|
||||
```python
|
||||
from youtube_transcript_api import YouTubeTranscriptApi
|
||||
|
||||
YouTubeTranscriptApi.get_transcript(video_id, cookies='/path/to/your/cookies.txt')
|
||||
|
||||
YouTubeTranscriptApi.get_transcripts([video_id], cookies='/path/to/your/cookies.txt')
|
||||
```
|
||||
|
||||
Using the CLI:
|
||||
|
||||
```
|
||||
youtube_transcript_api <first_video_id> <second_video_id> --cookies /path/to/your/cookies.txt
|
||||
```
|
||||
|
||||
|
||||
## Warning
|
||||
|
||||
This code uses an undocumented part of the YouTube API, which is called by the YouTube web-client. So there is no guarantee that it won't stop working tomorrow, if they change how things work. I will however do my best to make things working again as soon as possible if that happens. So if it stops working, let me know!
|
||||
|
||||
## Donation
|
||||
|
||||
If this project makes you happy by reducing your development time, you can make me happy by treating me to a cup of coffee :)
|
||||
|
||||
[](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=BAENLEW8VUJ6G&source=url)
|
||||
|
|
|
|||
|
|
@ -1,11 +1,9 @@
|
|||
import json
|
||||
|
||||
import pprint
|
||||
|
||||
import argparse
|
||||
|
||||
from ._api import YouTubeTranscriptApi
|
||||
|
||||
from .formatters import FormatterLoader
|
||||
|
||||
|
||||
class YouTubeTranscriptCli(object):
|
||||
def __init__(self, args):
|
||||
|
|
@ -34,7 +32,7 @@ class YouTubeTranscriptCli(object):
|
|||
|
||||
return '\n\n'.join(
|
||||
[str(exception) for exception in exceptions]
|
||||
+ ([json.dumps(transcripts) if parsed_args.json else pprint.pformat(transcripts)] if transcripts else [])
|
||||
+ ([FormatterLoader().load(parsed_args.format).format_transcripts(transcripts)] if transcripts else [])
|
||||
)
|
||||
|
||||
def _fetch_transcript(self, parsed_args, proxies, cookies, video_id):
|
||||
|
|
@ -98,11 +96,10 @@ class YouTubeTranscriptCli(object):
|
|||
help='If this flag is set transcripts which have been manually created will not be retrieved.',
|
||||
)
|
||||
parser.add_argument(
|
||||
'--json',
|
||||
action='store_const',
|
||||
const=True,
|
||||
default=False,
|
||||
help='If this flag is set the output will be JSON formatted.',
|
||||
'--format',
|
||||
type=str,
|
||||
default='pretty',
|
||||
choices=tuple(FormatterLoader.TYPES.keys()),
|
||||
)
|
||||
parser.add_argument(
|
||||
'--translate',
|
||||
|
|
|
|||
|
|
@ -37,13 +37,15 @@ class CouldNotRetrieveTranscript(Exception):
|
|||
|
||||
class VideoUnavailable(CouldNotRetrieveTranscript):
|
||||
CAUSE_MESSAGE = 'The video is no longer available'
|
||||
|
||||
|
||||
|
||||
class TooManyRequests(CouldNotRetrieveTranscript):
|
||||
CAUSE_MESSAGE = ("YouTube is receiving too many requests from this IP and now requires solving a captcha to continue. One of the following things can be done to work around this:\n\
|
||||
- Manually solve the captcha in a browser and export the cookie. Read here how to use that cookie with youtube-transcript-api: https://github.com/jdepoix/youtube-transcript-api#cookies\n\
|
||||
- Use a different IP address\n\
|
||||
- Wait until the ban on your IP has been lifted")
|
||||
|
||||
|
||||
class TranscriptsDisabled(CouldNotRetrieveTranscript):
|
||||
CAUSE_MESSAGE = 'Subtitles are disabled for this video'
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,168 @@
|
|||
import json
|
||||
|
||||
import pprint
|
||||
|
||||
|
||||
class Formatter(object):
|
||||
"""Formatter should be used as an abstract base class.
|
||||
|
||||
Formatter classes should inherit from this class and implement
|
||||
their own .format() method which should return a string. A
|
||||
transcript is represented by a List of Dictionary items.
|
||||
"""
|
||||
|
||||
def format_transcript(self, transcript, **kwargs):
|
||||
raise NotImplementedError('A subclass of Formatter must implement ' \
|
||||
'their own .format_transcript() method.')
|
||||
|
||||
def format_transcripts(self, transcripts, **kwargs):
|
||||
raise NotImplementedError('A subclass of Formatter must implement ' \
|
||||
'their own .format_transcripts() method.')
|
||||
|
||||
|
||||
class PrettyPrintFormatter(Formatter):
|
||||
def format_transcript(self, transcript, **kwargs):
|
||||
"""Pretty prints a transcript.
|
||||
|
||||
:param transcript:
|
||||
:return: A pretty printed string representation of the transcript.'
|
||||
:rtype str
|
||||
"""
|
||||
return pprint.pformat(transcript, **kwargs)
|
||||
|
||||
def format_transcripts(self, transcripts, **kwargs):
|
||||
"""Pretty prints a list of transcripts.
|
||||
|
||||
:param transcripts:
|
||||
:return: A pretty printed string representation of the transcripts.'
|
||||
:rtype str
|
||||
"""
|
||||
return self.format_transcript(transcripts, **kwargs)
|
||||
|
||||
|
||||
class JSONFormatter(Formatter):
|
||||
def format_transcript(self, transcript, **kwargs):
|
||||
"""Converts a transcript into a JSON string.
|
||||
|
||||
:param transcript:
|
||||
:return: A JSON string representation of the transcript.'
|
||||
:rtype str
|
||||
"""
|
||||
return json.dumps(transcript, **kwargs)
|
||||
|
||||
def format_transcripts(self, transcripts, **kwargs):
|
||||
"""Converts a list of transcripts into a JSON string.
|
||||
|
||||
:param transcripts:
|
||||
:return: A JSON string representation of the transcript.'
|
||||
:rtype str
|
||||
"""
|
||||
return self.format_transcript(transcripts, **kwargs)
|
||||
|
||||
|
||||
class TextFormatter(Formatter):
|
||||
def format_transcript(self, transcript, **kwargs):
|
||||
"""Converts a transcript into plain text with no timestamps.
|
||||
|
||||
:param transcript:
|
||||
:return: all transcript text lines separated by newline breaks.'
|
||||
:rtype str
|
||||
"""
|
||||
return '\n'.join(line['text'] for line in transcript)
|
||||
|
||||
def format_transcripts(self, transcripts, **kwargs):
|
||||
"""Converts a list of transcripts into plain text with no timestamps.
|
||||
|
||||
:param transcripts:
|
||||
:return: all transcript text lines separated by newline breaks.'
|
||||
:rtype str
|
||||
"""
|
||||
return '\n\n\n'.join([self.format_transcript(transcript, **kwargs) for transcript in transcripts])
|
||||
|
||||
|
||||
class WebVTTFormatter(Formatter):
|
||||
def _seconds_to_timestamp(self, time):
|
||||
"""Helper that converts `time` into a transcript cue timestamp.
|
||||
|
||||
:reference: https://www.w3.org/TR/webvtt1/#webvtt-timestamp
|
||||
|
||||
:param time: a float representing time in seconds.
|
||||
:type time: float
|
||||
:return: a string formatted as a cue timestamp, 'HH:MM:SS.MS'
|
||||
:rtype str
|
||||
:example:
|
||||
>>> self._seconds_to_timestamp(6.93)
|
||||
'00:00:06.930'
|
||||
"""
|
||||
time = float(time)
|
||||
hours, mins, secs = (
|
||||
int(time) // 3600,
|
||||
int(time) // 60,
|
||||
int(time) % 60,
|
||||
)
|
||||
ms = int(round((time - int(time))*1000, 2))
|
||||
return "{:02d}:{:02d}:{:02d}.{:03d}".format(hours, mins, secs, ms)
|
||||
|
||||
def format_transcript(self, transcript, **kwargs):
|
||||
"""A basic implementation of WEBVTT formatting.
|
||||
|
||||
:param transcript:
|
||||
:reference: https://www.w3.org/TR/webvtt1/#introduction-caption
|
||||
"""
|
||||
lines = []
|
||||
for i, line in enumerate(transcript):
|
||||
if i < len(transcript) - 1:
|
||||
# Looks ahead, use next start time since duration value
|
||||
# would create an overlap between start times.
|
||||
time_text = "{} --> {}".format(
|
||||
self._seconds_to_timestamp(line['start']),
|
||||
self._seconds_to_timestamp(transcript[i + 1]['start'])
|
||||
)
|
||||
else:
|
||||
# Reached the end, cannot look ahead, use duration now.
|
||||
duration = line['start'] + line['duration']
|
||||
time_text = "{} --> {}".format(
|
||||
self._seconds_to_timestamp(line['start']),
|
||||
self._seconds_to_timestamp(duration)
|
||||
)
|
||||
lines.append("{}\n{}".format(time_text, line['text']))
|
||||
|
||||
return "WEBVTT\n\n" + "\n\n".join(lines) + "\n"
|
||||
|
||||
def format_transcripts(self, transcripts, **kwargs):
|
||||
"""A basic implementation of WEBVTT formatting for a list of transcripts.
|
||||
|
||||
:param transcripts:
|
||||
:reference: https://www.w3.org/TR/webvtt1/#introduction-caption
|
||||
"""
|
||||
return '\n\n\n'.join([self.format_transcript(transcript, **kwargs) for transcript in transcripts])
|
||||
|
||||
|
||||
class FormatterLoader(object):
|
||||
TYPES = {
|
||||
'json': JSONFormatter,
|
||||
'pretty': PrettyPrintFormatter,
|
||||
'text': TextFormatter,
|
||||
'webvvt': WebVTTFormatter,
|
||||
}
|
||||
|
||||
class UnknownFormatterType(Exception):
|
||||
def __init__(self, formatter_type):
|
||||
super(FormatterLoader.UnknownFormatterType, self).__init__(
|
||||
'The format \'{formatter_type}\' is not supported. '
|
||||
'Choose one of the following formats: {supported_formatter_types}'.format(
|
||||
formatter_type=formatter_type,
|
||||
supported_formatter_types=', '.join(FormatterLoader.TYPES.keys()),
|
||||
)
|
||||
)
|
||||
|
||||
def load(self, formatter_type='pretty'):
|
||||
"""
|
||||
Loads the Formatter for the given formatter type.
|
||||
|
||||
:param formatter_type:
|
||||
:return: Formatter object
|
||||
"""
|
||||
if formatter_type not in FormatterLoader.TYPES.keys():
|
||||
raise FormatterLoader.UnknownFormatterType(formatter_type)
|
||||
return FormatterLoader.TYPES[formatter_type]()
|
||||
|
|
@ -25,50 +25,52 @@ class TestYouTubeTranscriptCli(TestCase):
|
|||
YouTubeTranscriptApi.list_transcripts = MagicMock(return_value=self.transcript_list_mock)
|
||||
|
||||
def test_argument_parsing(self):
|
||||
parsed_args = YouTubeTranscriptCli('v1 v2 --json --languages de en'.split())._parse_args()
|
||||
parsed_args = YouTubeTranscriptCli('v1 v2 --format json --languages de en'.split())._parse_args()
|
||||
self.assertEqual(parsed_args.video_ids, ['v1', 'v2'])
|
||||
self.assertEqual(parsed_args.json, True)
|
||||
self.assertEqual(parsed_args.format, 'json')
|
||||
self.assertEqual(parsed_args.languages, ['de', 'en'])
|
||||
self.assertEqual(parsed_args.http_proxy, '')
|
||||
self.assertEqual(parsed_args.https_proxy, '')
|
||||
|
||||
parsed_args = YouTubeTranscriptCli('v1 v2 --languages de en --json'.split())._parse_args()
|
||||
parsed_args = YouTubeTranscriptCli('v1 v2 --languages de en --format json'.split())._parse_args()
|
||||
self.assertEqual(parsed_args.video_ids, ['v1', 'v2'])
|
||||
self.assertEqual(parsed_args.json, True)
|
||||
self.assertEqual(parsed_args.format, 'json')
|
||||
self.assertEqual(parsed_args.languages, ['de', 'en'])
|
||||
self.assertEqual(parsed_args.http_proxy, '')
|
||||
self.assertEqual(parsed_args.https_proxy, '')
|
||||
|
||||
parsed_args = YouTubeTranscriptCli(' --json v1 v2 --languages de en'.split())._parse_args()
|
||||
parsed_args = YouTubeTranscriptCli(' --format json v1 v2 --languages de en'.split())._parse_args()
|
||||
self.assertEqual(parsed_args.video_ids, ['v1', 'v2'])
|
||||
self.assertEqual(parsed_args.json, True)
|
||||
self.assertEqual(parsed_args.format, 'json')
|
||||
self.assertEqual(parsed_args.languages, ['de', 'en'])
|
||||
self.assertEqual(parsed_args.http_proxy, '')
|
||||
self.assertEqual(parsed_args.https_proxy, '')
|
||||
|
||||
parsed_args = YouTubeTranscriptCli(
|
||||
'v1 v2 --languages de en --json --http-proxy http://user:pass@domain:port --https-proxy https://user:pass@domain:port'.split()
|
||||
'v1 v2 --languages de en --format json '
|
||||
'--http-proxy http://user:pass@domain:port '
|
||||
'--https-proxy https://user:pass@domain:port'.split()
|
||||
)._parse_args()
|
||||
self.assertEqual(parsed_args.video_ids, ['v1', 'v2'])
|
||||
self.assertEqual(parsed_args.json, True)
|
||||
self.assertEqual(parsed_args.format, 'json')
|
||||
self.assertEqual(parsed_args.languages, ['de', 'en'])
|
||||
self.assertEqual(parsed_args.http_proxy, 'http://user:pass@domain:port')
|
||||
self.assertEqual(parsed_args.https_proxy, 'https://user:pass@domain:port')
|
||||
|
||||
parsed_args = YouTubeTranscriptCli(
|
||||
'v1 v2 --languages de en --json --http-proxy http://user:pass@domain:port'.split()
|
||||
'v1 v2 --languages de en --format json --http-proxy http://user:pass@domain:port'.split()
|
||||
)._parse_args()
|
||||
self.assertEqual(parsed_args.video_ids, ['v1', 'v2'])
|
||||
self.assertEqual(parsed_args.json, True)
|
||||
self.assertEqual(parsed_args.format, 'json')
|
||||
self.assertEqual(parsed_args.languages, ['de', 'en'])
|
||||
self.assertEqual(parsed_args.http_proxy, 'http://user:pass@domain:port')
|
||||
self.assertEqual(parsed_args.https_proxy, '')
|
||||
|
||||
parsed_args = YouTubeTranscriptCli(
|
||||
'v1 v2 --languages de en --json --https-proxy https://user:pass@domain:port'.split()
|
||||
'v1 v2 --languages de en --format json --https-proxy https://user:pass@domain:port'.split()
|
||||
)._parse_args()
|
||||
self.assertEqual(parsed_args.video_ids, ['v1', 'v2'])
|
||||
self.assertEqual(parsed_args.json, True)
|
||||
self.assertEqual(parsed_args.format, 'json')
|
||||
self.assertEqual(parsed_args.languages, ['de', 'en'])
|
||||
self.assertEqual(parsed_args.https_proxy, 'https://user:pass@domain:port')
|
||||
self.assertEqual(parsed_args.http_proxy, '')
|
||||
|
|
@ -76,34 +78,34 @@ class TestYouTubeTranscriptCli(TestCase):
|
|||
def test_argument_parsing__only_video_ids(self):
|
||||
parsed_args = YouTubeTranscriptCli('v1 v2'.split())._parse_args()
|
||||
self.assertEqual(parsed_args.video_ids, ['v1', 'v2'])
|
||||
self.assertEqual(parsed_args.json, False)
|
||||
self.assertEqual(parsed_args.format, 'pretty')
|
||||
self.assertEqual(parsed_args.languages, ['en'])
|
||||
|
||||
def test_argument_parsing__video_ids_starting_with_dash(self):
|
||||
parsed_args = YouTubeTranscriptCli('\-v1 \-\-v2 \--v3'.split())._parse_args()
|
||||
self.assertEqual(parsed_args.video_ids, ['-v1', '--v2', '--v3'])
|
||||
self.assertEqual(parsed_args.json, False)
|
||||
self.assertEqual(parsed_args.format, 'pretty')
|
||||
self.assertEqual(parsed_args.languages, ['en'])
|
||||
|
||||
def test_argument_parsing__fail_without_video_ids(self):
|
||||
with self.assertRaises(SystemExit):
|
||||
YouTubeTranscriptCli('--json'.split())._parse_args()
|
||||
YouTubeTranscriptCli('--format json'.split())._parse_args()
|
||||
|
||||
def test_argument_parsing__json(self):
|
||||
parsed_args = YouTubeTranscriptCli('v1 v2 --json'.split())._parse_args()
|
||||
parsed_args = YouTubeTranscriptCli('v1 v2 --format json'.split())._parse_args()
|
||||
self.assertEqual(parsed_args.video_ids, ['v1', 'v2'])
|
||||
self.assertEqual(parsed_args.json, True)
|
||||
self.assertEqual(parsed_args.format, 'json')
|
||||
self.assertEqual(parsed_args.languages, ['en'])
|
||||
|
||||
parsed_args = YouTubeTranscriptCli('--json v1 v2'.split())._parse_args()
|
||||
parsed_args = YouTubeTranscriptCli('--format json v1 v2'.split())._parse_args()
|
||||
self.assertEqual(parsed_args.video_ids, ['v1', 'v2'])
|
||||
self.assertEqual(parsed_args.json, True)
|
||||
self.assertEqual(parsed_args.format, 'json')
|
||||
self.assertEqual(parsed_args.languages, ['en'])
|
||||
|
||||
def test_argument_parsing__languages(self):
|
||||
parsed_args = YouTubeTranscriptCli('v1 v2 --languages de en'.split())._parse_args()
|
||||
self.assertEqual(parsed_args.video_ids, ['v1', 'v2'])
|
||||
self.assertEqual(parsed_args.json, False)
|
||||
self.assertEqual(parsed_args.format, 'pretty')
|
||||
self.assertEqual(parsed_args.languages, ['de', 'en'])
|
||||
|
||||
def test_argument_parsing__proxies(self):
|
||||
|
|
@ -141,13 +143,13 @@ class TestYouTubeTranscriptCli(TestCase):
|
|||
def test_argument_parsing__translate(self):
|
||||
parsed_args = YouTubeTranscriptCli('v1 v2 --languages de en --translate cz'.split())._parse_args()
|
||||
self.assertEqual(parsed_args.video_ids, ['v1', 'v2'])
|
||||
self.assertEqual(parsed_args.json, False)
|
||||
self.assertEqual(parsed_args.format, 'pretty')
|
||||
self.assertEqual(parsed_args.languages, ['de', 'en'])
|
||||
self.assertEqual(parsed_args.translate, 'cz')
|
||||
|
||||
parsed_args = YouTubeTranscriptCli('v1 v2 --translate cz --languages de en'.split())._parse_args()
|
||||
self.assertEqual(parsed_args.video_ids, ['v1', 'v2'])
|
||||
self.assertEqual(parsed_args.json, False)
|
||||
self.assertEqual(parsed_args.format, 'pretty')
|
||||
self.assertEqual(parsed_args.languages, ['de', 'en'])
|
||||
self.assertEqual(parsed_args.translate, 'cz')
|
||||
|
||||
|
|
@ -194,7 +196,9 @@ class TestYouTubeTranscriptCli(TestCase):
|
|||
|
||||
def test_run__exclude_manually_created_and_generated(self):
|
||||
self.assertEqual(
|
||||
YouTubeTranscriptCli('v1 v2 --languages de en --exclude-manually-created --exclude-generated'.split()).run(),
|
||||
YouTubeTranscriptCli(
|
||||
'v1 v2 --languages de en --exclude-manually-created --exclude-generated'.split()
|
||||
).run(),
|
||||
''
|
||||
)
|
||||
|
||||
|
|
@ -210,7 +214,7 @@ class TestYouTubeTranscriptCli(TestCase):
|
|||
YouTubeTranscriptApi.list_transcripts.assert_any_call('v2', proxies=None, cookies=None)
|
||||
|
||||
def test_run__json_output(self):
|
||||
output = YouTubeTranscriptCli('v1 v2 --languages de en --json'.split()).run()
|
||||
output = YouTubeTranscriptCli('v1 v2 --languages de en --format json'.split()).run()
|
||||
|
||||
# will fail if output is not valid json
|
||||
json.loads(output)
|
||||
|
|
|
|||
|
|
@ -0,0 +1,102 @@
|
|||
from unittest import TestCase
|
||||
|
||||
import json
|
||||
|
||||
import pprint
|
||||
|
||||
from youtube_transcript_api.formatters import (
|
||||
Formatter,
|
||||
JSONFormatter,
|
||||
TextFormatter,
|
||||
WebVTTFormatter,
|
||||
PrettyPrintFormatter, FormatterLoader
|
||||
)
|
||||
|
||||
|
||||
class TestFormatters(TestCase):
|
||||
def setUp(self):
|
||||
self.transcript = [
|
||||
{'text': 'Test line 1', 'start': 0.0, 'duration': 1.50},
|
||||
{'text': 'line between', 'start': 1.5, 'duration': 2.0},
|
||||
{'text': 'testing the end line', 'start': 2.5, 'duration': 3.25}
|
||||
]
|
||||
self.transcripts = [self.transcript, self.transcript]
|
||||
|
||||
def test_base_formatter_format_call(self):
|
||||
with self.assertRaises(NotImplementedError):
|
||||
Formatter().format_transcript(self.transcript)
|
||||
with self.assertRaises(NotImplementedError):
|
||||
Formatter().format_transcripts([self.transcript])
|
||||
|
||||
def test_webvtt_formatter_starting(self):
|
||||
content = WebVTTFormatter().format_transcript(self.transcript)
|
||||
lines = content.split('\n')
|
||||
|
||||
# test starting lines
|
||||
self.assertEqual(lines[0], "WEBVTT")
|
||||
self.assertEqual(lines[1], "")
|
||||
|
||||
def test_webvtt_formatter_ending(self):
|
||||
content = WebVTTFormatter().format_transcript(self.transcript)
|
||||
lines = content.split('\n')
|
||||
|
||||
# test ending lines
|
||||
self.assertEqual(lines[-2], self.transcript[-1]['text'])
|
||||
self.assertEqual(lines[-1], "")
|
||||
|
||||
def test_webvtt_formatter_many(self):
|
||||
formatter = WebVTTFormatter()
|
||||
content = formatter.format_transcripts(self.transcripts)
|
||||
formatted_single_transcript = formatter.format_transcript(self.transcript)
|
||||
|
||||
self.assertEqual(content, formatted_single_transcript + '\n\n\n' + formatted_single_transcript)
|
||||
|
||||
def test_pretty_print_formatter(self):
|
||||
content = PrettyPrintFormatter().format_transcript(self.transcript)
|
||||
|
||||
self.assertEqual(content, pprint.pformat(self.transcript))
|
||||
|
||||
def test_pretty_print_formatter_many(self):
|
||||
content = PrettyPrintFormatter().format_transcripts(self.transcripts)
|
||||
|
||||
self.assertEqual(content, pprint.pformat(self.transcripts))
|
||||
|
||||
def test_json_formatter(self):
|
||||
content = JSONFormatter().format_transcript(self.transcript)
|
||||
|
||||
self.assertEqual(json.loads(content), self.transcript)
|
||||
|
||||
def test_json_formatter_many(self):
|
||||
content = JSONFormatter().format_transcripts(self.transcripts)
|
||||
|
||||
self.assertEqual(json.loads(content), self.transcripts)
|
||||
|
||||
def test_text_formatter(self):
|
||||
content = TextFormatter().format_transcript(self.transcript)
|
||||
lines = content.split('\n')
|
||||
|
||||
self.assertEqual(lines[0], self.transcript[0]["text"])
|
||||
self.assertEqual(lines[-1], self.transcript[-1]["text"])
|
||||
|
||||
def test_text_formatter_many(self):
|
||||
formatter = TextFormatter()
|
||||
content = formatter.format_transcripts(self.transcripts)
|
||||
formatted_single_transcript = formatter.format_transcript(self.transcript)
|
||||
|
||||
self.assertEqual(content, formatted_single_transcript + '\n\n\n' + formatted_single_transcript)
|
||||
|
||||
def test_formatter_loader(self):
|
||||
loader = FormatterLoader()
|
||||
formatter = loader.load('json')
|
||||
|
||||
self.assertTrue(isinstance(formatter, JSONFormatter))
|
||||
|
||||
def test_formatter_loader__default_formatter(self):
|
||||
loader = FormatterLoader()
|
||||
formatter = loader.load()
|
||||
|
||||
self.assertTrue(isinstance(formatter, PrettyPrintFormatter))
|
||||
|
||||
def test_formatter_loader__unknown_format(self):
|
||||
with self.assertRaises(FormatterLoader.UnknownFormatterType):
|
||||
FormatterLoader().load('png')
|
||||
Loading…
Reference in New Issue