X-Git-Url: https://git.rapsys.eu/youtubedl/blobdiff_plain/65cc51b0a1ddf217bc2026332532e0f8019c158a..72d91f91be4810269f74cf296cab5dd61b84129c:/README.txt diff --git a/README.txt b/README.txt index 089923b..173daf0 100644 --- a/README.txt +++ b/README.txt @@ -1,142 +1,457 @@ -NAME -==== +youtube-dl - download videos from youtube.com or other video platforms + +- INSTALLATION +- DESCRIPTION +- OPTIONS +- CONFIGURATION +- OUTPUT TEMPLATE +- VIDEO SELECTION +- FAQ +- DEVELOPER INSTRUCTIONS +- BUGS +- COPYRIGHT + +INSTALLATION +============ + +To install it right away for all UNIX users (Linux, OS X, etc.), type: + + sudo curl https://yt-dl.org/latest/youtube-dl -o /usr/local/bin/youtube-dl + sudo chmod a+x /usr/local/bin/youtube-dl + +If you do not have curl, you can alternatively use a recent wget: + + sudo wget https://yt-dl.org/downloads/latest/youtube-dl -O /usr/local/bin/youtube-dl + sudo chmod a+x /usr/local/bin/youtube-dl + +Windows users can download a .exe file and place it in their home +directory or any other location on their PATH. + +OS X users can install youtube-dl with Homebrew. -youtube-dl + brew install youtube-dl -SYNOPSIS -======== +You can also use pip: -youtube-dl [OPTIONS] URL [URL...] + sudo pip install youtube-dl + +Alternatively, refer to the developer instructions below for how to +check out and work with the git repository. For further options, +including PGP signatures, see +https://rg3.github.io/youtube-dl/download.html . 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.x (x being at least 6), and it is not platform specific. It -should work in your Unix box, in Windows or in Mac OS X. It is released -to the public domain, which means you can modify it, redistribute it or -use it however you like. +version 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. + + youtube-dl [OPTIONS] URL [URL...] OPTIONS ======= - -h, --help print this help text and exit - --version print program version and exit - -U, --update update this program to latest version - -i, --ignore-errors continue on download errors - -r, --rate-limit LIMIT download rate limit (e.g. 50k or 44.6m) - -R, --retries RETRIES number of retries (default is 10) - --buffer-size SIZE size of download buffer (e.g. 1024 or 16k) (default - is 1024) - --no-resize-buffer do not automatically adjust the buffer size. By - default, the buffer size is automatically resized - from an initial value of SIZE. - --dump-user-agent display the current browser identification - --user-agent UA specify a custom user agent - --list-extractors List all supported extractors and the URLs they - would handle + -h, --help print this help text and exit + --version print program version and exit + -U, --update update this program to latest version. Make + sure that you have sufficient permissions + (run with sudo if needed) + -i, --ignore-errors continue on download errors, for example to + skip unavailable videos in a playlist + --abort-on-error Abort downloading of further videos (in the + playlist or the command line) if an error + occurs + --dump-user-agent display the current browser identification + --list-extractors List all supported extractors and the URLs + they would handle + --extractor-descriptions Output descriptions of all supported + extractors + --default-search PREFIX Use this prefix for unqualified URLs. For + example "gvsearch2:" downloads two videos + from google videos for youtube-dl "large + apple". Use the value "auto" to let + youtube-dl guess ("auto_warning" to emit a + warning when guessing). "error" just throws + an error. The default value "fixup_error" + repairs broken URLs, but emits an error if + this is not possible instead of searching. + --ignore-config Do not read configuration files. When given + in the global configuration file /etc + /youtube-dl.conf: Do not read the user + configuration in ~/.config/youtube- + dl/config (%APPDATA%/youtube-dl/config.txt + on Windows) + --flat-playlist Do not extract the videos of a playlist, + only list them. + --no-color Do not emit color codes in output. + +Network Options: +---------------- + + --proxy URL Use the specified HTTP/HTTPS proxy. Pass in + an empty string (--proxy "") for direct + connection + --socket-timeout SECONDS Time to wait before giving up, in seconds + --source-address IP Client-side IP address to bind to + (experimental) + -4, --force-ipv4 Make all connections via IPv4 + (experimental) + -6, --force-ipv6 Make all connections via IPv6 + (experimental) Video Selection: ---------------- - --playlist-start NUMBER playlist video to start at (default is 1) - --playlist-end NUMBER playlist video to end at (default is last) - --match-title REGEX download only matching titles (regex or caseless - sub-string) - --reject-title REGEX skip download for matching titles (regex or - caseless sub-string) - --max-downloads NUMBER Abort after downloading NUMBER files + --playlist-start NUMBER playlist video to start at (default is 1) + --playlist-end NUMBER playlist video to end at (default is last) + --playlist-items ITEM_SPEC playlist video items to download. Specify + indices of the videos in the playlist + seperated by commas like: "--playlist-items + 1,2,5,8" if you want to download videos + indexed 1, 2, 5, 8 in the playlist. You can + specify range: "--playlist-items + 1-3,7,10-13", it will download the videos + at index 1, 2, 3, 7, 10, 11, 12 and 13. + --match-title REGEX download only matching titles (regex or + caseless sub-string) + --reject-title REGEX skip download for matching titles (regex or + caseless sub-string) + --max-downloads NUMBER Abort after downloading NUMBER files + --min-filesize SIZE Do not download any videos smaller than + SIZE (e.g. 50k or 44.6m) + --max-filesize SIZE Do not download any videos larger than SIZE + (e.g. 50k or 44.6m) + --date DATE download only videos uploaded in this date + --datebefore DATE download only videos uploaded on or before + this date (i.e. inclusive) + --dateafter DATE download only videos uploaded on or after + this date (i.e. inclusive) + --min-views COUNT Do not download any videos with less than + COUNT views + --max-views COUNT Do not download any videos with more than + COUNT views + --match-filter FILTER (Experimental) Generic video filter. + Specify any key (see help for -o for a list + of available keys) to match if the key is + present, !key to check if the key is not + present,key > NUMBER (like "comment_count > + 12", also works with >=, <, <=, !=, =) to + compare against a number, and & to require + multiple matches. Values which are not + known are excluded unless you put a + question mark (?) after the operator.For + example, to only match videos that have + been liked more than 100 times and disliked + less than 50 times (or the dislike + functionality is not available at the given + service), but who also have a description, + use --match-filter "like_count > 100 & + dislike_count 10M]"). This works for + filesize, height, width, tbr, abr, vbr, + asr, and fps and the comparisons <, <=, >, + >=, =, != and for ext, acodec, vcodec, + container, and protocol and the comparisons + =, != . Formats for which the value is not + known are excluded unless you put a + question mark (?) after the operator. You + can combine format filters, so -f "[height + <=? 720][tbr>500]" selects up to 720p + videos (or videos where the height is not + known) with a bitrate of at least 500 + KBit/s. 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. + You can merge the video and audio of two + formats into a single file using -f + (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 + --max-quality FORMAT highest quality format to download + -F, --list-formats list all available formats + --youtube-skip-dash-manifest Do not download the DASH manifest on + YouTube videos + --merge-output-format FORMAT If a merge is required (e.g. + bestvideo+bestaudio), output to given + container format. One of mkv, mp4, ogg, + webm, flv.Ignored if no merge is required + +Subtitle Options: +----------------- + + --write-sub write subtitle file + --write-auto-sub write automatic subtitle file (youtube + only) + --all-subs downloads all the available subtitles of + the video + --list-subs lists all available subtitles for the video + --sub-format FORMAT subtitle format, accepts formats + preference, for example: "ass/srt/best" + --sub-lang LANGS languages of the subtitles to download + (optional) separated by commas, use IETF + language tags like 'en,pt' Authentication Options: ----------------------- - -u, --username USERNAME account username - -p, --password PASSWORD account password - -n, --netrc use .netrc authentication data + -u, --username USERNAME login with this account ID + -p, --password PASSWORD account password. If this option is left + out, youtube-dl will ask interactively. + -2, --twofactor TWOFACTOR two-factor auth code + -n, --netrc use .netrc authentication data + --video-password PASSWORD video password (vimeo, smotri) Post-processing Options: ------------------------ - -x, --extract-audio convert video files to audio-only files (requires - ffmpeg or avconv and ffprobe or avprobe) - --audio-format FORMAT "best", "aac", "vorbis", "mp3", "m4a", or "wav"; - best by default - --audio-quality QUALITY ffmpeg/avconv audio quality specification, insert a - value between 0 (better) and 9 (worse) for VBR or a - specific bitrate like 128K (default 5) - -k, --keep-video keeps the video file on disk after the post- - processing; the video is erased by default + -x, --extract-audio convert video files to audio-only files + (requires ffmpeg or avconv and ffprobe or + avprobe) + --audio-format FORMAT "best", "aac", "vorbis", "mp3", "m4a", + "opus", or "wav"; "best" by default + --audio-quality QUALITY ffmpeg/avconv audio quality specification, + insert a value between 0 (better) and 9 + (worse) for VBR or a specific bitrate like + 128K (default 5) + --recode-video FORMAT Encode the video to another format if + necessary (currently supported: + mp4|flv|ogg|webm|mkv) + -k, --keep-video keeps the video file on disk after the + post-processing; the video is erased by + default + --no-post-overwrites do not overwrite post-processed files; the + post-processed files are overwritten by + default + --embed-subs embed subtitles in the video (only for mp4 + videos) + --embed-thumbnail embed thumbnail in the audio as cover art + --add-metadata write metadata to the video file + --xattrs write metadata to the video file's xattrs + (using dublin core and xdg standards) + --fixup POLICY Automatically correct known faults of the + file. One of never (do nothing), warn (only + emit a warning), detect_or_warn(the + default; fix file if we can, warn + otherwise) + --prefer-avconv Prefer avconv over ffmpeg for running the + postprocessors (default) + --prefer-ffmpeg Prefer ffmpeg over avconv for running the + postprocessors + --ffmpeg-location PATH Location of the ffmpeg/avconv binary; + either the path to the binary or its + containing directory. + --exec CMD Execute a command on the file after + downloading, similar to find's -exec + syntax. Example: --exec 'adb push {} + /sdcard/Music/ && rm {}' + --convert-subtitles FORMAT Convert the subtitles to other format + (currently supported: srt|ass|vtt) CONFIGURATION ============= You can configure youtube-dl by placing default arguments (such as --extract-audio --no-mtime to always extract the audio and not copy the -mtime) into /etc/youtube-dl.conf and/or ~/.local/config/youtube-dl.conf. +mtime) into /etc/youtube-dl.conf and/or ~/.config/youtube-dl/config. On +Windows, the configuration file locations are +%APPDATA%\youtube-dl\config.txt and +C:\Users\\youtube-dl.conf. OUTPUT TEMPLATE =============== @@ -163,38 +478,119 @@ lowercase S. Allowed names are: the file. - autonumber: The sequence will be replaced by a five-digit number that will be increased with each download, starting at zero. +- playlist: The name or the id of the playlist that contains the + video. +- playlist_index: The index of the video in the playlist, a five-digit + number. -The current default template is %(id)s.%(ext)s, but that will be -switchted to %(title)s-%(id)s.%(ext)s (which can be requested with -t at -the moment). +The current default template is %(title)s-%(id)s.%(ext)s. In some cases, you don't want special characters such as 中, spaces, or &, such as when transferring the downloaded filename to a Windows system or the filename through an 8bit-unsafe channel. In these cases, add the --restrict-filenames flag to get a shorter title: - $ youtube-dl --get-filename -o "%(title)s.%(ext)s" BaW_jenozKc - youtube-dl test video ''_ä↭𝕐.mp4 # All kinds of weird characters - $ youtube-dl --get-filename -o "%(title)s.%(ext)s" BaW_jenozKc --restrict-filenames - youtube-dl_test_video_.mp4 # A simple file name +``` {.bash} +$ youtube-dl --get-filename -o "%(title)s.%(ext)s" BaW_jenozKc +youtube-dl test video ''_ä↭𝕐.mp4 # All kinds of weird characters +$ youtube-dl --get-filename -o "%(title)s.%(ext)s" BaW_jenozKc --restrict-filenames +youtube-dl_test_video_.mp4 # A simple file name +``` + +VIDEO SELECTION +=============== + +Videos can be filtered by their upload date using the options --date, +--datebefore or --dateafter, they accept dates in two formats: + +- Absolute dates: Dates in the format YYYYMMDD. +- Relative dates: Dates in the format + (now|today)[+-][0-9](day|week|month|year)(s)? + +Examples: + +``` {.bash} +# Download only the videos uploaded in the last 6 months +$ youtube-dl --dateafter now-6months + +# Download only the videos uploaded on January 1, 1970 +$ youtube-dl --date 19700101 + +$ # will only download the videos uploaded in the 200x decade +$ youtube-dl --dateafter 20000101 --datebefore 20091231 +``` FAQ === +How do I update youtube-dl? + +If you've followed our manual installation instructions, you can simply +run youtube-dl -U (or, on Linux, sudo youtube-dl -U). + +If you have used pip, a simple sudo pip install -U youtube-dl is +sufficient to update. + +If you have installed youtube-dl using a package manager like apt-get or +yum, use the standard system update mechanism to update. Note that +distribution packages are often outdated. As a rule of thumb, youtube-dl +releases at least once a month, and often weekly or even daily. Simply +go to http://yt-dl.org/ to find out the current version. Unfortunately, +there is nothing we youtube-dl developers can do if your distributions +serves a really outdated version. You can (and should) complain to your +distribution in their bugtracker or support forum. + +As a last resort, you can also uninstall the version installed by your +package manager and follow our manual installation instructions. For +that, remove the distribution's package, with a line like + + sudo apt-get remove -y youtube-dl + +Afterwards, simply follow our manual installation instructions: + + sudo wget https://yt-dl.org/latest/youtube-dl -O /usr/local/bin/youtube-dl + sudo chmod a+x /usr/local/bin/youtube-dl + hash -r + +Again, from then on you'll be able to update with sudo youtube-dl -U. + +I'm getting an error Unable to extract OpenGraph title on YouTube playlists + +YouTube changed their playlist format in March 2014 and later on, so +you'll need at least youtube-dl 2014.07.25 to download all YouTube +videos. + +If you have installed youtube-dl with a package manager, pip, setup.py +or a tarball, please use that to update. Note that Ubuntu packages do +not seem to get updated anymore. Since we are not affiliated with +Ubuntu, there is little we can do. Feel free to report bugs to the +Ubuntu packaging guys - all they have to do is update the package to a +somewhat recent version. See above for a way to update. + +Do I always have to pass in --max-quality FORMAT, or -citw? + +By default, youtube-dl intends to have the best options (incidentally, +if you have a convincing case that these should be different, please +file an issue where you explain that). Therefore, it is unnecessary and +sometimes harmful to copy long option strings from webpages. In +particular, --max-quality limits the video quality (so if you want the +best quality, do NOT pass it in), and the only option out of -citw that +is regularly useful is -i. + Can you please put the -b option back? Most people asking this question are not aware that youtube-dl now defaults to downloading the highest available quality as reported by YouTube, which will be 1080p or 720p in some cases, so you no longer need the -b option. For some specific videos, maybe YouTube does not -report them to be available in a specific high quality format you''re +report them to be available in a specific high quality format you're interested in. In that case, simply request it with the -f option and youtube-dl will try to download it. I get HTTP error 402 when trying to download a video. What's this? Apparently YouTube requires you to pass a CAPTCHA test if you download -too much. We''re considering to provide a way to let you solve the +too much. We're considering to provide a way to let you solve the CAPTCHA, but at the moment, your best course of action is pointing a webbrowser to the youtube URL, solving the CAPTCHA, and restart youtube-dl. @@ -204,25 +600,47 @@ I have downloaded a video but how can I play it? Once the video is fully downloaded, use any video player, such as vlc or mplayer. -The links provided by youtube-dl -g are not working anymore +I extracted a video URL with -g, but it does not play on another machine / in my webbrowser. + +It depends a lot on the service. In many cases, requests for the video +(to download/play it) must come from the same IP address and with the +same cookies. Use the --cookies option to write the required cookies +into a file, and advise your downloader to read cookies from that file. +Some sites also require a common user agent to be used, use +--dump-user-agent to see the one in use by youtube-dl. -The URLs youtube-dl outputs require the downloader to have the correct -cookies. Use the --cookies option to write the required cookies into a -file, and advise your downloader to read cookies from that file. Some -sites also require a common user agent to be used, use --dump-user-agent -to see the one in use by youtube-dl. +It may be beneficial to use IPv6; in some cases, the restrictions are +only applied to IPv4. Some services (sometimes only for a subset of +videos) do not restrict the video URL by IP address, cookie, or +user-agent, but these are the exception rather than the rule. + +Please bear in mind that some URL protocols are not supported by +browsers out of the box, including RTMP. If you are using -g, your own +downloader must support these as well. + +If you want to play the video on a machine that is not running +youtube-dl, you can relay the video content from the machine that runs +youtube-dl. You can use -o - to let youtube-dl stream a video to stdout, +or simply allow the player to download the files written by youtube-dl +in turn. ERROR: no fmt_url_map or conn information found in video info -youtube has switched to a new video info format in July 2011 which is -not supported by old versions of youtube-dl. You can update youtube-dl -with sudo youtube-dl --update. +YouTube has switched to a new video info format in July 2011 which is +not supported by old versions of youtube-dl. See above for how to update +youtube-dl. ERROR: unable to download video -youtube requires an additional signature since September 2012 which is -not supported by old versions of youtube-dl. You can update youtube-dl -with sudo youtube-dl --update. +YouTube requires an additional signature since September 2012 which is +not supported by old versions of youtube-dl. See above for how to update +youtube-dl. + +ExtractorError: Could not find JS function u'OF' + +In February 2015, the new YouTube player contained a character sequence +in a string that was misinterpreted by old versions of youtube-dl. See +above for how to update youtube-dl. SyntaxError: Non-ASCII character @@ -247,30 +665,378 @@ The exe throws a Runtime error from Visual C++ To run the exe you need to install first the Microsoft Visual C++ 2008 Redistributable Package. -COPYRIGHT -========= +On Windows, how should I set up ffmpeg and youtube-dl? Where should I put the exe files? -youtube-dl is released into the public domain by the copyright holders. +If you put youtube-dl and ffmpeg in the same directory that you're +running the command from, it will work, but that's rather cumbersome. -This README file was originally written by Daniel Bolton -(https://github.com/dbbolton) and is likewise released into the public -domain. +To make a different directory work - either for ffmpeg, or for +youtube-dl, or for both - simply create the directory (say, C:\bin, or +C:\Users\\bin), put all the executables directly in there, +and then set your PATH environment variable to include that directory. + +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 youtube-dl or ffmpeg, no matter what directory you're +in. + +How do I put downloads into a specific folder? + +Use the -o to specify an output template, for example +-o "/home/user/videos/%(title)s-%(id)s.%(ext)s". If you want this for +all of your downloads, put the option into your configuration file. + +How do I download a video starting with a - ? + +Either prepend http://www.youtube.com/watch?v= or separate the ID from +the options with --: + + youtube-dl -- -wNyEUrxzFU + youtube-dl "http://www.youtube.com/watch?v=-wNyEUrxzFU" + +Can you add support for this anime video site, or site which shows current movies for free? + +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's distributor, or is published under a free +license), the service is probably unfit for inclusion to youtube-dl. + +A note on the service that they don't host the infringing content, but +just link to those who do, is evidence that the service should not 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. + +Support requests for services that do 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. + +How can I detect whether a given URL is supported by youtube-dl? + +For one, have a look at the list of supported sites. Note that it can +sometimes happen that the site changes its URL scheme (say, from +http://example.com/video/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. + +It is not possible to detect whether a URL is supported or not. That's +because youtube-dl contains a generic extractor which matches all 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's hosting itself. +Therefore, we neither recommend nor support disabling, excluding, or +removing the generic extractor. + +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 UnsupportedError exception if you run it from a Python +program. + +DEVELOPER INSTRUCTIONS +====================== + +Most users do not need to build youtube-dl and can download the builds +or get them from their distribution. + +To run youtube-dl as a developer, you don't need to build anything +either. Simply execute + + python -m youtube_dl + +To run the test, simply invoke your favorite test runner, or execute a +test file directly; any of the following work: + + python -m unittest discover + python test/test_download.py + nosetests + +If you want to create a build of youtube-dl yourself, you'll need + +- python +- make +- pandoc +- zip +- nosetests + +Adding support for a new site + +If you want to add support for a new site, you can follow this quick +list (assuming your service is called yourextractor): + +1. Fork this repository +2. Check out the source code with + git clone git@github.com:YOUR_GITHUB_USERNAME/youtube-dl.git +3. Start a new git branch with + cd youtube-dl; git checkout -b yourextractor +4. Start with this simple template and save it to + youtube_dl/extractor/yourextractor.py: + + ``` {.python} + # coding: utf-8 + from __future__ import unicode_literals + + from .common import InfoExtractor + + + class YourExtractorIE(InfoExtractor): + _VALID_URL = r'https?://(?:www\.)?yourextractor\.com/watch/(?P[0-9]+)' + _TEST = { + 'url': 'http://yourextractor.com/watch/42', + 'md5': 'TODO: md5 sum of the first 10241 bytes of the video file (use --test)', + 'info_dict': { + 'id': '42', + 'ext': 'mp4', + 'title': 'Video title goes here', + 'thumbnail': 're:^https?://.*\.jpg$', + # 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'

(.*?)

', webpage, 'title') + + return { + 'id': video_id, + 'title': title, + 'description': self._og_search_description(webpage), + # TODO more properties (see youtube_dl/extractor/common.py) + } + ``` + +5. Add an import in youtube_dl/extractor/__init__.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 for possible + helper methods and a detailed description of what your extractor + should return. Add tests and code for as many as you want. +8. If you can, check the code with flake8. +9. When the tests pass, add the new files and commit them and push the + result, like this: + + $ git add youtube_dl/extractor/__init__.py + $ git add youtube_dl/extractor/yourextractor.py + $ git commit -m '[yourextractor] Add new extractor' + $ git push origin yourextractor + +10. Finally, create a pull request. We'll then review and merge it. + +In any case, thank you very much for your contributions! + +EMBEDDING YOUTUBE-DL +==================== + +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. + +From a Python program, you can embed youtube-dl in a more powerful +fashion, like this: + +``` {.python} +import youtube_dl + +ydl_opts = {} +with youtube_dl.YoutubeDL(ydl_opts) as ydl: + ydl.download(['http://www.youtube.com/watch?v=BaW_jenozKc']) +``` + +Most likely, you'll want to use various options. For a list of what can +be done, have a look at youtube_dl/YoutubeDL.py. For a start, if you +want to intercept youtube-dl's output, set a logger object. + +Here'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: + +``` {.python} +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['status'] == 'finished': + print('Done downloading, now converting ...') + + +ydl_opts = { + 'format': 'bestaudio/best', + 'postprocessors': [{ + 'key': 'FFmpegExtractAudio', + 'preferredcodec': 'mp3', + 'preferredquality': '192', + }], + 'logger': MyLogger(), + 'progress_hooks': [my_hook], +} +with youtube_dl.YoutubeDL(ydl_opts) as ydl: + ydl.download(['http://www.youtube.com/watch?v=BaW_jenozKc']) +``` BUGS ==== Bugs and suggestions should be reported at: -https://github.com/rg3/youtube-dl/issues +https://github.com/rg3/youtube-dl/issues . Unless you were prompted so +or there is another pertinent reason (e.g. GitHub fails to accept the +bug report), please do not send bug reports via personal email. For +discussions, join us in the irc channel #youtube-dl on freenode. + +Please include the full output of youtube-dl when run with -v. + +The output (including the first lines) contain important debugging +information. Issues without the full output are often not reproducible +and therefore do not get solved in short order, if ever. + +Please re-read your issue once again to avoid a couple of common +mistakes (you can and should use this as a checklist): + +Is the description of the issue itself sufficient? + +We often get issue reports that we cannot really decipher. While in most +cases we eventually get the required information after asking back +multiple times, this poses an unnecessary drain on our resources. Many +contributors, including myself, are also not native speakers, so we may +misread some parts. + +So please elaborate on what feature you are requesting, or what bug you +want to be fixed. Make sure that it's obvious + +- What the problem is +- How it could be fixed +- How your proposed solution would look like + +If your report is shorter than two lines, it is almost certainly missing +some of these, which makes it hard for us to respond to it. We're often +too polite to close the issue outright, but the missing info makes +misinterpretation likely. As a commiter myself, I often get frustrated +by these issues, since the only possible way for me to move forward on +them is to ask for clarification over and over. + +For bug reports, this means that your report should contain the complete +output of youtube-dl when called with the -v flag. The error message you +get for (most) bugs even says so, but you would not believe how many of +our bug reports do not contain this information. + +Site support requests must contain an example URL. An example URL is a +URL you might want to download, like +http://www.youtube.com/watch?v=BaW_jenozKc . There should be an obvious +video present. Except under very special circumstances, the main page of +a video service (e.g. http://www.youtube.com/ ) is not an example URL. + +Are you using the latest version? + +Before reporting any issue, type youtube-dl -U. This should report that +you're up-to-date. About 20% of the reports we receive are already +fixed, but people are using outdated versions. This goes for feature +requests as well. + +Is the issue already documented? + +Make sure that someone has not already opened the issue you're trying to +open. Search at the top of the window or at +https://github.com/rg3/youtube-dl/search?type=Issues . If there is an +issue, feel free to write something along the lines of "This affects me +as well, with version 2015.01.01. Here is some more information on the +issue: ...". While some issues may be old, a new post into them often +spurs rapid activity. + +Why are existing options not enough? + +Before requesting a new feature, please have a quick peek at the list of +supported options. Many feature requests are for features that actually +exist already! Please, absolutely do show off your work in the issue +report and detail how the existing similar options do not solve your +problem. -Please include: +Is there enough context in your bug report? -- Your exact command line, like - youtube-dl -t "http://www.youtube.com/watch?v=uHlDtZ6Oc3s&feature=channel_video_title". - A common mistake is not to escape the &. Putting URLs in quotes - should solve this problem. -- The output of youtube-dl --version -- The output of python --version -- The name and version of your Operating System ("Ubuntu 11.04 x64" or - "Windows 7 x64" is usually enough). +People want to solve problems, and often think they do us a favor by +breaking down their larger problems (e.g. wanting to skip already +downloaded files) to a specific request (e.g. requesting us to look +whether the file exists before downloading the info page). However, what +often happens is that they break down the problem into two steps: One +simple, and one impossible (or extremely complicated one). + +We are then presented with a very complicated request when the original +problem could be solved far easier, e.g. by recording the downloaded +video IDs in a separate file. To avoid this, you must include the +greater context where it is non-obvious. In particular, every feature +request that does not consist of adding support for a new site should +contain a use case scenario that explains in what situation the missing +feature would be useful. + +Does the issue involve one problem, and one problem only? + +Some of our users seem to think there is a limit of issues they can or +should open. There is no limit of issues they can or should open. While +it may seem appealing to be able to dump all your issues into one +ticket, that means that someone who solves one of your issues cannot +mark the issue as closed. Typically, reporting a bunch of issues leads +to the ticket lingering since nobody wants to attack that behemoth, +until someone mercifully splits the issue into multiple ones. + +In particular, every site support request issue should only pertain to +services at one site (generally under a common domain, but always using +the same backend technology). Do not request support for vimeo user +videos, Whitehouse podcasts, and Google Plus pages in the same issue. +Also, make sure that you don't post bug reports alongside feature +requests. As a rule of thumb, a feature request does not include outputs +of youtube-dl that are not immediately related to the feature at hand. +Do not post reports of a network error alongside the request for a new +video service. + +Is anyone going to need the feature? + +Only post features that you (or an incapacitated friend you can +personally talk to) require. Do not post features because they seem like +a good idea. If they are really useful, they will be requested by +someone who requires them. + +Is your question about youtube-dl? + +It may sound strange, but some bug reports we receive are completely +unrelated to youtube-dl and relate to a different or even the reporter's +own application. Please make sure that you are actually using +youtube-dl. If you are using a UI for youtube-dl, report the bug to the +maintainer of the actual application providing the UI. On the other +hand, if your UI for youtube-dl fails in some way you believe is related +to youtube-dl, by all means, go ahead and report the bug. + +COPYRIGHT +========= + +youtube-dl is released into the public domain by the copyright holders. + +This README file was originally written by Daniel Bolton +(https://github.com/dbbolton) and is likewise released into the public +domain. -For discussions, join us in the irc channel #youtube-dl on freenode.