+To make a different directory work \- either for ffmpeg, or for
+youtube\-dl, or for both \- simply create the directory (say,
+\f[C]C:\\bin\f[], or \f[C]C:\\Users\\<User\ name>\\bin\f[]), put all the
+executables directly in there, and then set your PATH environment
+variable (https://www.java.com/en/download/help/path.xml) to include
+that directory.
+.PP
+From then on, after restarting your shell, you will be able to access
+both youtube\-dl and ffmpeg (and youtube\-dl will be able to find
+ffmpeg) by simply typing \f[C]youtube\-dl\f[] or \f[C]ffmpeg\f[], no
+matter what directory you\[aq]re in.
+.SS How do I put downloads into a specific folder?
+.PP
+Use the \f[C]\-o\f[] to specify an output template (#output-template),
+for example \f[C]\-o\ "/home/user/videos/%(title)s\-%(id)s.%(ext)s"\f[].
+If you want this for all of your downloads, put the option into your
+configuration file (#configuration).
+.SS How do I download a video starting with a \f[C]\-\f[] ?
+.PP
+Either prepend \f[C]http://www.youtube.com/watch?v=\f[] or separate the
+ID from the options with \f[C]\-\-\f[]:
+.IP
+.nf
+\f[C]
+youtube\-dl\ \-\-\ \-wNyEUrxzFU
+youtube\-dl\ "http://www.youtube.com/watch?v=\-wNyEUrxzFU"
+\f[]
+.fi
+.SS Can you add support for this anime video site, or site which shows
+current movies for free?
+.PP
+As a matter of policy (as well as legality), youtube\-dl does not
+include support for services that specialize in infringing copyright.
+As a rule of thumb, if you cannot easily find a video that the service
+is quite obviously allowed to distribute (i.e.
+that has been uploaded by the creator, the creator\[aq]s distributor, or
+is published under a free license), the service is probably unfit for
+inclusion to youtube\-dl.
+.PP
+A note on the service that they don\[aq]t host the infringing content,
+but just link to those who do, is evidence that the service should
+\f[B]not\f[] be included into youtube\-dl.
+The same goes for any DMCA note when the whole front page of the service
+is filled with videos they are not allowed to distribute.
+A "fair use" note is equally unconvincing if the service shows
+copyright\-protected videos in full without authorization.
+.PP
+Support requests for services that \f[B]do\f[] purchase the rights to
+distribute their content are perfectly fine though.
+If in doubt, you can simply include a source that mentions the
+legitimate purchase of content.
+.SS How can I detect whether a given URL is supported by youtube\-dl?
+.PP
+For one, have a look at the list of supported
+sites (docs/supportedsites.md).
+Note that it can sometimes happen that the site changes its URL scheme
+(say, from http://example.com/v/1234567 to http://example.com/v/1234567
+) and youtube\-dl reports an URL of a service in that list as
+unsupported.
+In that case, simply report a bug.
+.PP
+It is \f[I]not\f[] possible to detect whether a URL is supported or not.
+That\[aq]s because youtube\-dl contains a generic extractor which
+matches \f[B]all\f[] URLs.
+You may be tempted to disable, exclude, or remove the generic extractor,
+but the generic extractor not only allows users to extract videos from
+lots of websites that embed a video from another service, but may also
+be used to extract video from a service that it\[aq]s hosting itself.
+Therefore, we neither recommend nor support disabling, excluding, or
+removing the generic extractor.
+.PP
+If you want to find out whether a given URL is supported, simply call
+youtube\-dl with it.
+If you get no videos back, chances are the URL is either not referring
+to a video or unsupported.
+You can find out which by examining the output (if you run youtube\-dl
+on the console) or catching an \f[C]UnsupportedError\f[] exception if
+you run it from a Python program.
+.SH DEVELOPER INSTRUCTIONS
+.PP
+Most users do not need to build youtube\-dl and can download the
+builds (http://rg3.github.io/youtube-dl/download.html) or get them from
+their distribution.
+.PP
+To run youtube\-dl as a developer, you don\[aq]t need to build anything
+either.
+Simply execute
+.IP
+.nf
+\f[C]
+python\ \-m\ youtube_dl
+\f[]
+.fi
+.PP
+To run the test, simply invoke your favorite test runner, or execute a
+test file directly; any of the following work:
+.IP
+.nf
+\f[C]
+python\ \-m\ unittest\ discover
+python\ test/test_download.py
+nosetests
+\f[]
+.fi
+.PP
+If you want to create a build of youtube\-dl yourself, you\[aq]ll need
+.IP \[bu] 2
+python
+.IP \[bu] 2
+make
+.IP \[bu] 2
+pandoc
+.IP \[bu] 2
+zip
+.IP \[bu] 2
+nosetests
+.SS Adding support for a new site
+.PP
+If you want to add support for a new site, you can follow this quick
+list (assuming your service is called \f[C]yourextractor\f[]):
+.IP " 1." 4
+Fork this repository (https://github.com/rg3/youtube-dl/fork)
+.IP " 2." 4
+Check out the source code with
+\f[C]git\ clone\ git\@github.com:YOUR_GITHUB_USERNAME/youtube\-dl.git\f[]
+.IP " 3." 4
+Start a new git branch with
+\f[C]cd\ youtube\-dl;\ git\ checkout\ \-b\ yourextractor\f[]
+.IP " 4." 4
+Start with this simple template and save it to
+\f[C]youtube_dl/extractor/yourextractor.py\f[]:
+.RS 4
+.IP
+.nf
+\f[C]
+#\ coding:\ utf\-8
+from\ __future__\ import\ unicode_literals
+
+from\ .common\ import\ InfoExtractor
+
+
+class\ YourExtractorIE(InfoExtractor):
+\ \ \ \ _VALID_URL\ =\ r\[aq]https?://(?:www\\.)?yourextractor\\.com/watch/(?P<id>[0\-9]+)\[aq]
+\ \ \ \ _TEST\ =\ {
+\ \ \ \ \ \ \ \ \[aq]url\[aq]:\ \[aq]http://yourextractor.com/watch/42\[aq],
+\ \ \ \ \ \ \ \ \[aq]md5\[aq]:\ \[aq]TODO:\ md5\ sum\ of\ the\ first\ 10241\ bytes\ of\ the\ video\ file\ (use\ \-\-test)\[aq],
+\ \ \ \ \ \ \ \ \[aq]info_dict\[aq]:\ {
+\ \ \ \ \ \ \ \ \ \ \ \ \[aq]id\[aq]:\ \[aq]42\[aq],
+\ \ \ \ \ \ \ \ \ \ \ \ \[aq]ext\[aq]:\ \[aq]mp4\[aq],
+\ \ \ \ \ \ \ \ \ \ \ \ \[aq]title\[aq]:\ \[aq]Video\ title\ goes\ here\[aq],
+\ \ \ \ \ \ \ \ \ \ \ \ \[aq]thumbnail\[aq]:\ \[aq]re:^https?://.*\\.jpg$\[aq],
+\ \ \ \ \ \ \ \ \ \ \ \ #\ TODO\ more\ properties,\ either\ as:
+\ \ \ \ \ \ \ \ \ \ \ \ #\ *\ A\ value
+\ \ \ \ \ \ \ \ \ \ \ \ #\ *\ MD5\ checksum;\ start\ the\ string\ with\ md5:
+\ \ \ \ \ \ \ \ \ \ \ \ #\ *\ A\ regular\ expression;\ start\ the\ string\ with\ re:
+\ \ \ \ \ \ \ \ \ \ \ \ #\ *\ Any\ Python\ type\ (for\ example\ int\ or\ float)
+\ \ \ \ \ \ \ \ }
+\ \ \ \ }
+
+\ \ \ \ 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\ ...
+\ \ \ \ \ \ \ \ title\ =\ self._html_search_regex(r\[aq]<h1>(.*?)</h1>\[aq],\ webpage,\ \[aq]title\[aq])
+
+\ \ \ \ \ \ \ \ return\ {
+\ \ \ \ \ \ \ \ \ \ \ \ \[aq]id\[aq]:\ video_id,
+\ \ \ \ \ \ \ \ \ \ \ \ \[aq]title\[aq]:\ title,
+\ \ \ \ \ \ \ \ \ \ \ \ \[aq]description\[aq]:\ self._og_search_description(webpage),
+\ \ \ \ \ \ \ \ \ \ \ \ #\ TODO\ more\ properties\ (see\ youtube_dl/extractor/common.py)
+\ \ \ \ \ \ \ \ }
+\f[]
+.fi
+.RE
+.IP " 5." 4
+Add an import in
+\f[C]youtube_dl/extractor/__init__.py\f[] (https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/__init__.py).
+.IP " 6." 4
+Run
+\f[C]python\ test/test_download.py\ TestDownload.test_YourExtractor\f[].
+This \f[I]should fail\f[] at first, but you can continually re\-run it
+until you\[aq]re done.
+If you decide to add more than one test, then rename \f[C]_TEST\f[] to
+\f[C]_TESTS\f[] and make it into a list of dictionaries.
+The tests will be then be named
+\f[C]TestDownload.test_YourExtractor\f[],
+\f[C]TestDownload.test_YourExtractor_1\f[],
+\f[C]TestDownload.test_YourExtractor_2\f[], etc.
+.IP " 7." 4
+Have a look at
+\f[C]youtube_dl/common/extractor/common.py\f[] (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.
+.IP " 8." 4
+If you can, check the code with
+flake8 (https://pypi.python.org/pypi/flake8).
+.IP " 9." 4
+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:
+.RS 4
+.IP
+.nf
+\f[C]
+$\ git\ add\ youtube_dl/extractor/__init__.py
+$\ git\ add\ youtube_dl/extractor/yourextractor.py
+$\ git\ commit\ \-m\ \[aq][yourextractor]\ Add\ new\ extractor\[aq]
+$\ git\ push\ origin\ yourextractor
+\f[]
+.fi
+.RE
+.IP "10." 4
+Finally, create a pull
+request (https://help.github.com/articles/creating-a-pull-request).
+We\[aq]ll then review and merge it.
+.PP
+In any case, thank you very much for your contributions!
+.SH EMBEDDING YOUTUBE\-DL
+.PP
+youtube\-dl makes the best effort to be a good command\-line program,
+and thus should be callable from any programming language.
+If you encounter any problems parsing its output, feel free to create a
+report (https://github.com/rg3/youtube-dl/issues/new).
+.PP
+From a Python program, you can embed youtube\-dl in a more powerful
+fashion, like this:
+.IP
+.nf
+\f[C]
+import\ youtube_dl
+
+ydl_opts\ =\ {}
+with\ youtube_dl.YoutubeDL(ydl_opts)\ as\ ydl:
+\ \ \ \ ydl.download([\[aq]http://www.youtube.com/watch?v=BaW_jenozKc\[aq]])
+\f[]
+.fi
+.PP
+Most likely, you\[aq]ll want to use various options.
+For a list of what can be done, have a look at
+youtube_dl/YoutubeDL.py (https://github.com/rg3/youtube-dl/blob/master/youtube_dl/YoutubeDL.py#L69).
+For a start, if you want to intercept youtube\-dl\[aq]s output, set a
+\f[C]logger\f[] object.
+.PP
+Here\[aq]s a more complete example of a program that outputs only errors
+(and a short message after the download is finished), and
+downloads/converts the video to an mp3 file:
+.IP
+.nf
+\f[C]
+import\ youtube_dl
+
+
+class\ MyLogger(object):
+\ \ \ \ def\ debug(self,\ msg):
+\ \ \ \ \ \ \ \ pass
+
+\ \ \ \ def\ warning(self,\ msg):
+\ \ \ \ \ \ \ \ pass
+
+\ \ \ \ def\ error(self,\ msg):
+\ \ \ \ \ \ \ \ print(msg)
+
+
+def\ my_hook(d):
+\ \ \ \ if\ d[\[aq]status\[aq]]\ ==\ \[aq]finished\[aq]:
+\ \ \ \ \ \ \ \ print(\[aq]Done\ downloading,\ now\ converting\ ...\[aq])
+
+
+ydl_opts\ =\ {
+\ \ \ \ \[aq]format\[aq]:\ \[aq]bestaudio/best\[aq],
+\ \ \ \ \[aq]postprocessors\[aq]:\ [{
+\ \ \ \ \ \ \ \ \[aq]key\[aq]:\ \[aq]FFmpegExtractAudio\[aq],
+\ \ \ \ \ \ \ \ \[aq]preferredcodec\[aq]:\ \[aq]mp3\[aq],
+\ \ \ \ \ \ \ \ \[aq]preferredquality\[aq]:\ \[aq]192\[aq],
+\ \ \ \ }],
+\ \ \ \ \[aq]logger\[aq]:\ MyLogger(),
+\ \ \ \ \[aq]progress_hooks\[aq]:\ [my_hook],
+}
+with\ youtube_dl.YoutubeDL(ydl_opts)\ as\ ydl:
+\ \ \ \ ydl.download([\[aq]http://www.youtube.com/watch?v=BaW_jenozKc\[aq]])
+\f[]
+.fi
Rapsys Git / youtubedl / blobdiff