Firefox, YouTube and WebM

Five important items of note today relating to Mozilla’s support for the VP8 codec:

1. Google will be releasing VP8 under an open source and royalty-free basis. VP8 is a high-quality video codec that Google acquired when they purchased the company On2. The VP8 codec represents a vast improvement in quality-per-bit over Theora and is comparable in quality to H.264.

2. The VP8 codec will be combined with the Vorbis audio codec and a subset of the Matroska container format to build a new standard for Open Video on the web called WebM. You can find out more about the project at its new site:

3. We will include support for WebM in Firefox. You can get super-early WebM builds of Firefox 4 pre-alpha today. WebM will also be included in Google Chrome and Opera.

4. Every video on YouTube will be transcoded into WebM. They have about 1.2 million videos available today and will be working through their back catalog over time. But they have committed to supporting everything.

5. This is something that is supported by many partners, not just Google and others. Content providers like Brightcove have signed up to support WebM as part of a full HTML5 video solution. Hardware companies, encoding providers and other parts of the video stack are all part of the list of companies backing WebM. Even Adobe will be supporting WebM in Flash. Firefox, with its market share and principled leadership and YouTube, with its video reach are the most important partners in this solution, but we are only a small part of the larger ecosystem of video.

We’re extremely excited to see Google joining us to support Open Video. They are making technology available on terms consistent with the Open Web and the W3C Royalty-Free licensing terms. And – most importantly – they are committing to support a full open video stack on the world’s largest video site. This changes the landscape for video and moves the baseline for what other sites have to do to maintain parity and keep up with upcoming advances in video technology, not to mention compatibility with the set of browsers that are growing their userbase and advancing technology on the web.

At Mozilla, we’ve wanted video on the web to move as fast as the rest of the web. That has required a baseline of open technology to build on. Theora was a good start, but VP8 is better. Expect us to start pushing on video innovation with vigor. We’ll innovate like the web has, moving from the edges in, with dozens of small revolutions that add up to something larger than the sum of those parts. VP8 is one of those pieces, HTML5 is another. If you watch this weblog, you can start to see those other pieces starting to emerge as well. The web is creeping into more and more technologies, with Firefox leading the way. We intend to keep leading the web beyond HTML5 to the next place it needs to be.

Today is a day of great change. Tomorrow will be another.


  1. […] 원저자: Christopher Blizzard – 원문으로 가기 […]

    June 13th, 2010 at 09:28

  2. alireza jafarian

    ciao buon giornata e vi auguro tante cose vorreai avere contatti con i miei ex colleghi universitarie architetti antonino modica e massimigliano fardella magari potrete aiutarmi,vi ringrazio tanto e grazie. ciao a dopo.

    June 22nd, 2010 at 01:46

  3. […] HD Video: Watch hardware-accelerated, super-smooth, HD-quality HTML5 video on YouTube using the new WebM format. […]

    July 6th, 2010 at 14:25

  4. […] Support – The biggest change here so far is that we’ve got support for WebM. If you’re part of the Youtube HTML5 beta WebM videos should play pretty […]

    July 6th, 2010 at 17:26

  5. Gabriel Dibble

    Many thanx

    Long live free software <3

    July 13th, 2010 at 10:30

  6. […] WebM のネイティブ実装 […]

    July 27th, 2010 at 17:37

  7. […] support for the HD HTML5 WebM video […]

    July 27th, 2010 at 22:23

  8. Tran

    Nothing is more frustrating then waiting to view a 2 min video that takes 5 mins to load up. keep up the good work guys.

    July 28th, 2010 at 08:48

  9. […] para WebM, de forma que se reproducen videos en HTML5 natívamente. Muchos sitios están adoptando este […]

    July 28th, 2010 at 14:04

  10. […] Mozilla talks the future of Firefox with WebM […]

    July 28th, 2010 at 14:44

  11. […] دعم صيغة الفيديو عالية الجودة “HD Video” بإستخدام تقنية (WebM format). […]

    July 29th, 2010 at 09:42

  12. saivert

    YouTube’s WebM player is still buggy and switching from 360p quality to 720p sometimes doesn’t resume playback and I have to refresh the page several times. This has to be fixed. Works fine in Google Chrome.
    Don’t know if this is a bug with the video support in Firefox or if Google needs to add code that deals with Firefox differently. Best case would be if the same code worked the same in all browsers. but even with HTML5 this isn’t the case.

    When will the web be truly unified and universal?

    August 4th, 2010 at 08:15

  13. […] support for the HD HTML5 WebM video […]

    August 11th, 2010 at 23:34

  14. […] HD video: fuldskærms-video er nu hardwareaccelereret og Googles nye WebM-format understøttes, så du kan se HD-videoer på YouTube direkte i browseren. […]

    August 12th, 2010 at 06:19

  15. […] support for the HD HTML5 WebM video […]

    August 26th, 2010 at 03:12

  16. Rick Wilson

    WebM is a giant step *backwards*. Vorbis is a lossy audio format, so guess what, folks? All of you who worked your ass off to set the mics, amps, monitors, cables, boards, software and hardware just right to achieve the best *lossless* sound for your YouTube video, are about to have your work transcoded to this crappy “WebM” thing. I offer my most sincere condolences.

    November 28th, 2010 at 19:16

    1. Aaron

      You have no idea how lossy works do you.

      Yes, a little data is lost. But what is lost is generally beyond human perception.

      And might I add, the other competing formats, H.264 and ogg are also lossy formats.
      Also, I might add that only on still images have a noticeable data loss. But as I said, it is not noticeable on ogg, webm, and h.264.

      January 24th, 2011 at 15:02

  17. nicholasreddig

    i want youtube

    December 17th, 2010 at 14:43

  18. […] support for the HD HTML5 WebM video […]

    March 18th, 2011 at 22:58

  19. […] durchHTML5 form APIerweiterte Formular ControlsNeuen HTML5 ParserNative Unterstützung des HD HTML5 WebM video formatErweiterte CSS3 Unterstützungund viele weitere Funktionen …Fazit:Mit Firefox 4 […]

    March 19th, 2011 at 08:22

  20. […] Hardware Acceleration is now on by default for Windows 7 usersNative support for the HD HTML5 WebM video format, hardware accelerated where availableThe stop and reload buttons have been merged into […]

    April 3rd, 2011 at 07:19

  21. […] support for the HD HTML5 WebM video format, hardware accelerated where […]

    July 6th, 2011 at 15:38

  22. […] support for the HD HTML5 WebM video format, hardware accelerated where […]

    August 6th, 2011 at 23:07

  23. […] support for the HD HTML5 WebM video […]

    December 18th, 2011 at 19:16

  24. […] this rendering model can now draw faster and more efficientlyNative support for the HD HTML5 WebM video formatWeb developers can update the URL field without reloading the page using HTML History […]

    December 28th, 2011 at 19:23


    If I remove “flash player in Firefox our chrome, i Can’t play video on ‘Youtube.

    I’ve changed my user agent in Safari browser to Ipad ios5 to force use html5 videos, it don’t support it. why can ipad play youtube videos without Flash player, but safari on windows need Flash Player. I DON’T UNDERSTAND THIS apple!

    January 8th, 2012 at 15:59

  26. Lucas

    Hi, Is there any good Firefox add-on which automatically switches to HTML5 on YouTube and sites alike, to avoid the manual steps to join the HTML5 “try something different” found on YouTube?

    February 3rd, 2013 at 21:14

    1. Robert Nyman [Editor]

      Not to my knowledge.

      February 4th, 2013 at 03:03

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