Introducing Wikipedia's new HTML5 video player

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A new video player has been enabled on Wikipedia and its sister sites, and it comes with the promise of bringing free educational videos to more people, on more devices, in more languages.
The player is the same HTML5 player used in the Kaltura open-source video platform. It has been integrated with MediaWiki (the software that runs Wikimedia sites like Wikipedia) through an extension called TimedMediaHandler. It replaces an older Ogg-only player that has been in use since 2007.

The new player supports closed captions in multiple languages.
The new player supports closed captions in multiple languages.

Based on HTML5, the new player plays audio and video files on wiki pages. It brings many new features, like advanced support for closed captions and other timed text. By allowing contributors to transcribe videos, the new player is a significant step towards accessibility for hearing-impaired Wikipedia readers. Captions can easily be translated into many languages, thus expanding their potential audience.
TimedMediaHandler also comes with other useful features, like support for the royalty-free WebM video format. Support for WebM makes it possible to seamlessly import videos encoded to that format, such as freely-licensed content from YouTube’s massive library.
Even further behind the scenes, TimedMediaHandler adds support for server-side transcoding, i.e. the ability to convert from one video format to another, in order to deliver the appropriate video stream to the user depending on their bandwidth and the size of the player. For example, support for mobile formats is available, although it is not currently enabled.

The player’s “Share” feature provides a short snippet of code to directly embed videos from Wikimedia Commons in web pages and blog posts, as is the case here.

Sponsored by Kaltura and Google, developers Michael Dale and Jan Gerber are the main architects of the successful launch of the new player. With the support of the Wikimedia Foundation’s engineering team and Kaltura, they have gone through numerous cycles of development, review and testing to finally release the fruits of years of work.
Efforts to better integrate video content to Wikipedia and its sister sites date back to early 2008, when Kaltura and the Wikimedia Foundation announced their first collaborative video experiment. Since then, incremental improvements have been released, but the deployment of TimedMediaHandler is the most significant achievement to date.
Some features provided by TimedMediaHandler have been available to users of Wikimedia Commons during development, in experimental mode. Registered users could enable the beta features in their personal preferences to enjoy a nicer interface and edit subtitles. Since the new player is compatible with existing subtitles created during that time, there is an existing body of captions that it can already load and display, like on this mash-up of interviews of Wikipedians.
Wikimedia Commons is the central media repository for Wikipedia and its sister sites. It acts as an archive for all their multimedia content; even if a video is also hosted elsewhere, Wikimedia sites need their own copy to ensure that the resource remains available even if third-party sites disappear. From a privacy perspective, it also ensures that the users’ personal information is not shared with third-party hosting platforms. The new player also complies with free media licenses by displaying author information at the end of the video, wherever it is embedded.
This commitment comes with its set of complex technical challenges. For many websites, displaying a video is as easy as embedding it from a popular hosting platform like YouTube or Vimeo. By simply using a short bit of HTML code, any blogger can embed a video directly into their web page, without having to worry about disk space, codecs, browser support or bandwidth.
Although Wikimedia sites are a much more modest video hosting platform, they still need to address these complex issues. For example, engineers at the Wikimedia Foundation have been engaged in a long overhaul of their media storage infrastructure, to keep up with the increasing demand in storage space for multimedia content. More recently, they have also been improving the efficiency of their caching servers to deliver large videos.
The challenges of preparing for more multimedia and video content on Wikipedia are not limited to delivering content to readers: uploading these videos in the first place is just as important, due to the participatory nature of Wikimedia sites. Contributing quality original videos to Wikipedia is arguably much harder than editing text on a wiki page.
In 2010, the Open Video Alliance launched a campaign called “Let’s Get Video on Wikipedia“. The project aimed to motivate more people to take and upload relevant educational video content to Wikimedia Commons. It featured a tutorial and an experimental wizard to insert videos into Wikipedia articles.
The UploadWizard, a step-by-step upload assistant developed by the Wikimedia Foundation in 2010-2011, has been critical to making multimedia participation more accessible and intuitive. Further improvements are underway that will facilitate video contribution, like the currently experimental chunked uploading feature, that allows for more reliable transfers of large files.
On the internet, video is a very static medium: it rarely changes once uploaded. In contrast, the success of Wikipedia relies on numerous volunteers constantly editing and improving each others contributions.
Appropriate tools will hopefully reduce this dissonance, like Kaltura’s sequencer, which empowers users to remix videos directly online. Successfully translating its radically collaborative nature to multimedia content will be critical to Wikipedia’s transition into the age of video.
Guillaume Paumier
Technical communications manager

Archive notice: This is an archived post from, which operated under different editorial and content guidelines than Diff.

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Awesome! Keep up the excellent job.

Why Wikipedia??? But.. great news!!

Have you guys looked at Firefox’s Popcorn project? Can Wikimedia video be included in this?
See link

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[…] billet, Introducing Wikipedia’s new HTML5 video player, a été écrit par Guillaume Paumier et publié sur le blog de la Wikimedia Foundation sous […]

Nice work, looks promising ! Thanks for the news !

Way to go! Kudos

nifty.. keep up the great work guys.

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I wonder if educational videos from youtube (CrashCourse, KhanAcademy, Vihart, NumberPhile, Scishow… etc) can be uploaded on relevant articles to supplement the content.
What are the restrictions on videos? At what point do they become ‘biased’? Do the all the Wikipedia Rules apply to videos as well?

Crashes my Firefox 16.0.2 on Win 7 64.

The player barely worked in Opera. I wonder why not just have the buttons and menu separate from the player and give the native video player the video instead.
No need to build something that browsers already have natively.

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Looks awesome, but I have to ask… is there actually a legal way to download the Creative Commons licensed video from YouTube? Being CC is only useful if you can legally access the files in the first place…

kaltura? it sells products, there are tons of free video tools around. I dont understand this move


Awesome I wanted to shout, however my first quite enthusiastic attempt to play the video ended up with my Firefox crash :-(.
The Firefox freezed (being unresponsive) and started to load and load and load (visible through taskmanager), until the 6GB of my RAM had been fully filled up (from 3GB) and than theFF crashed down.

[…] Introducing Wikipedia’s new HTML5 video player […]

720p very slow

Menu doesn’t show up after playing the video twice or trice

Thanks to everyone for providing feedback. 3. Popcorn is indeed a cool project. Wikimedia videos can now more easily be used in that context, both with the associated timed text and webm web streamable flavors. 7. Yes there are scripts to import freely licenced material from youtube, and a discution on commons-l about setting up import scripts: 8. There was an ogg bug in firefox 16, see for discution and work around: 9. There is a user configuration flag you can set to display the native player. mw.config.set(“EmbedPlayer.NativeControls”, true ); We have not heavaly tested opera. It may… Read more »

Very good article. Thank you and keep posting 🙂

Please don’t use background pictures for essential elements of the gui, they aren’t shown when using a custom stylesheet to make all web pages bright on black.

Really great news.

Awesome!! Delighted to see this progress.

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Cool. How about adding fullscreen button?

Very good article. Thanks and keep posting 🙂

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