# DESCRIPTION
**youtube-dl** is a small command-line program to download videos from
YouTube.com and a few more sites. It requires the Python interpreter, version
-2.6, 2.7, or 3.3+, and it is not platform specific. It should work on
+2.6, 2.7, or 3.2+, and it is not platform specific. It should work on
your Unix box, on Windows or on Mac OS X. It is released to the public domain,
which means you can modify it, redistribute it or use it however you like.
COUNT views
--max-views COUNT Do not download any videos with more than
COUNT views
- --no-playlist download only the currently playing video
+ --no-playlist If the URL refers to a video and a
+ playlist, download only the video.
--age-limit YEARS download only videos suitable for the given
age
--download-archive FILE Download only videos not listed in the
%(upload_date)s for the upload date
(YYYYMMDD), %(extractor)s for the provider
(youtube, metacafe, etc), %(id)s for the
- video id, %(playlist)s for the playlist the
+ video id, %(playlist_title)s,
+ %(playlist_id)s, or %(playlist)s (=title if
+ present, ID otherwise) for the playlist the
video is in, %(playlist_index)s for the
- position in the playlist and %% for a
- literal percent. %(height)s and %(width)s
- for the width and height of the video
- format. %(resolution)s for a textual
+ position in the playlist. %(height)s and
+ %(width)s for the width and height of the
+ video format. %(resolution)s for a textual
description of the resolution of the video
- format. Use - to output to stdout. Can also
- be used to download to a different
- directory, for example with -o '/my/downloa
- ds/%(uploader)s/%(title)s-%(id)s.%(ext)s' .
+ format. %% for a literal percent. Use - to
+ output to stdout. Can also be used to
+ download to a different directory, for
+ example with -o '/my/downloads/%(uploader)s
+ /%(title)s-%(id)s.%(ext)s' .
--autonumber-size NUMBER Specifies the number of digits in
%(autonumber)s when it is present in output
filename template or --auto-number option
"worst", "worstvideo" and "worstaudio". By
default, youtube-dl will pick the best
quality. Use commas to download multiple
- audio formats, such as -f
- 136/137/mp4/bestvideo,140/m4a/bestaudio
+ audio formats, such as -f
+ 136/137/mp4/bestvideo,140/m4a/bestaudio.
+ You can merge the video and audio of two
+ formats into a single file using -f <video-
+ format>+<audio-format> (requires ffmpeg or
+ avconv), for example -f
+ bestvideo+bestaudio.
--all-formats download all available video formats
--prefer-free-formats prefer free video formats unless a specific
one is requested
def _real_extract(self, url):
video_id = self._match_id(url)
+ webpage = self._download_webpage(url, video_id)
# TODO more code goes here, for example ...
- webpage = self._download_webpage(url, video_id)
title = self._html_search_regex(r'<h1>(.*?)</h1>', webpage, 'title')
return {
'id': video_id,
'title': title,
+ 'description': self._og_search_description(webpage),
# TODO more properties (see youtube_dl/extractor/common.py)
}
```
6. Run `python test/test_download.py TestDownload.test_YourExtractor`. This *should fail* at first, but you can continually re-run it until you're done. If you decide to add more than one test, then rename ``_TEST`` to ``_TESTS`` and make it into a list of dictionaries. The tests will be then be named `TestDownload.test_YourExtractor`, `TestDownload.test_YourExtractor_1`, `TestDownload.test_YourExtractor_2`, etc.
7. Have a look at [`youtube_dl/common/extractor/common.py`](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/common.py) for possible helper methods and a [detailed description of what your extractor should return](https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/common.py#L38). Add tests and code for as many as you want.
8. If you can, check the code with [pyflakes](https://pypi.python.org/pypi/pyflakes) (a good idea) and [pep8](https://pypi.python.org/pypi/pep8) (optional, ignore E501).
-9. When the tests pass, [add](https://www.kernel.org/pub/software/scm/git/docs/git-add.html) the new files and [commit](https://www.kernel.org/pub/software/scm/git/docs/git-commit.html) them and [push](https://www.kernel.org/pub/software/scm/git/docs/git-push.html) the result, like this:
+9. When the tests pass, [add](http://git-scm.com/docs/git-add) the new files and [commit](http://git-scm.com/docs/git-commit) them and [push](http://git-scm.com/docs/git-push) the result, like this:
$ git add youtube_dl/extractor/__init__.py
$ git add youtube_dl/extractor/yourextractor.py
projects / youtube-dl / blobdiff