Commons:YouTube files/Downloading/fr
This article describes how you can download videos and subtitles from YouTube.
YouTube's own download option
If you are downloading a video from your own YouTube account, you can try following the instructions here: "Download your own YouTube videos"
Software, tools or scripts
yt-dlp
yt-dlp (download page) is an open-source tool available as package in many GNU/Linux distributions, as well as macOS and Windows. However, yt-dlp does not offer a graphical user interface. Command line example:
yt-dlp -o "%(title)s-%(id)s.%(ext)s" --continue --retries 4 --write-info-json --write-description --all-subs --ignore-errors -f bestvideo+bestaudio --recode-video webm URL
If the video has a WebM encoded version published (as according to youtube-dl -F URL, you can use the following to download the highest quality WebM version:
yt-dlp -f bestvideo[ext=webm]+bestaudio[ext=webm]/best[ext=webm] URL
If you wish to download the video only without audio (for example, to avoid unnecessary freely licensed background music or unnecessary commentary), you can adjust the example commands provided above as follows:
yt-dlp -o "%(title)s-%(id)s.%(ext)s" --continue --retries 4 --write-info-json --write-description --all-subs --ignore-errors -f bestvideo --recode-video webm URL
yt-dlp -f bestvideo[ext=webm] URL
JDownloader
JDownloader allows downloading all videos from a specific account (useful for large numbers of videos) and specific formats, but is partly proprietary.
Youtube Subtitle Downloader
If the YouTube video has subtitles, Youtube Subtitle Downloader can be used to download them in SRT format. This is an userscript, you need to install Greasemonkey, Tampermonkey or Violentmonkey browser extension before using the userscript.
Website / Web app
You can search "youtube downloader" or "download youtube video" on Google to find websites / web apps that allow you to enter a YouTube video URL and get download links in many video formats.
To download substitles, You can search "youtube subtitle download".
Note that these sites could track what you are trying to get, but should be less risky than "unknown code from unknown 3rd party" browser extensions.
Here is a popular Firefox addon for downloading Youtube videos that has been around for years:
Conversion
Files not available in WebM have to be converted into WebM or Ogg Theora. See: Help:Converting video. If a file from youtube uses VP9 video, but vorbis audio, it can be converted using ffmpeg (or avconv) using a command like:
avconv -i inputfile.webm -acodec copy -vcodec libvpx out.webm
If you can get the (typically best) MP4 dash video, you might also want the M4A audio, to mux and transcode both into OGV or WebM, example:
ffmpeg -i input.mp4 -i input.m4a -f ogg -c:v libtheora -q:v 9 -c:a libvorbis -q:a 6 output.ogv
WebM
In May 2010, Google introduced the free WebM video encoding format, and many videos from YouTube are available under this format. As of November 2012, Wikimedia Commons accepts WebM uploads. If videos are available in .webm format on YouTube, they may not need to be converted to a different format before uploading them to Commons. However, often the VP9 video streams from youtube do not have audio, and need to be recombined with an audio stream before being uploaded to Commons.
Moving to Commons with youtube2mediawiki
If the YouTube video is available in the WebM format and you are comfortable with running Python scripts on your machine, one possibility is to use youtube2mediawiki:
- Download and install python 2.7
- Download youtube2mediawiki (e.g. as ZIP-file)
- Extract the archive and use the command line to start the python script.
Voir aussi
- Commons:Video
- Commons:Chunked uploads for files with 100MB or more
- Commons:video2commons
- Help:Converting video#WebM with mkvtoolnix
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