为提升您的使用体验,本站正在维护,部分功能暂时无法使用。如果本站文章无法解决您的问题,您想要向社区提问的话,请到 Twitter 上的 @FirefoxSupport 或 Reddit 上的 /r/firefox 提问,我们的支持社区将会很快回复您的疑问。

搜索 | 用户支持

防范以用户支持为名的诈骗。我们绝对不会要求您拨打电话或发送短信,及提供任何个人信息。请使用“举报滥用”选项报告涉及违规的行为。

详细了解

why firefox is not Supported H.264 H.264?

  • 5 个回答
  • 11 人有此问题
  • 12 次查看
  • 最后回复者为 G-hot

more options

The newest generation of mainstream internet browsers all support native HTML 5 video playback without the need for third-party plugins like Adobe Flash.

Please refer to this link http://en.wikipedia.org/wiki/HTML5_video for the details.


Once the videos are converted to HTML5 compatible video files, you can embed it into your web pages. However, different browsers support different video codecs. Currently, Ogg Theora, H.264 and WEBM/VP8 are used in the different html 5


Browsers Ogg Theora H.264 WebM/VP8 IE 7/8 No <video> support No <video> support No <video> support IE 9 Not Supported Supported Supported only if user installs WebM for IE9 Chrome Supported Not Supported Supported Firefox Supported Not Supported Supported Safari Not Supported Supported Not Supported Opera Supported Not Supported Supported

The newest generation of mainstream internet browsers all support native HTML 5 video playback without the need for third-party plugins like Adobe Flash. Please refer to this link http://en.wikipedia.org/wiki/HTML5_video for the details. Once the videos are converted to HTML5 compatible video files, you can embed it into your web pages. However, different browsers support different video codecs. Currently, Ogg Theora, H.264 and WEBM/VP8 are used in the different html 5 <video> tag implementations by the browser vendors including Internet Explorer(IE), Moziila Firefox, Google Chrome, Apple Safari and Opera. Browsers Ogg Theora H.264 WebM/VP8 IE 7/8 No <video> support No <video> support No <video> support IE 9 Not Supported Supported Supported only if user installs WebM for IE9 Chrome Supported Not Supported Supported Firefox Supported Not Supported Supported Safari Not Supported Supported Not Supported Opera Supported Not Supported Supported

由G-hot于修改

所有回复 (5)

more options
  1. In the Location bar, type about:config and press Enter. The about:config "This might void your warranty!" warning page may appear.
  2. Click I'll be careful, I promise!, to continue to the about:config page. Now type media.windows-media-foundation.enabled' and when the value shows double click it, it should be bold (and saying true) and h.264 shall playback.

由kobe于修改

more options

i don’t see "be bold" anywhere? and i have this set to media.windows-media-foundation.enabled;boolean true

more options
more options

Hello G-hot, i think the problem is your os (xp), see:

To avoid patent issues, support for MPEG 4, H.264, MP3 and AAC is not built directly into Firefox. Instead it relies on support from the OS or hardware. Firefox supports these formats on the following platforms: Platform Firefox version Windows 7+ 21.0 Windows Vista 22.0 Android 20.0 Firefox OS 15.0

down down the page : https://developer.mozilla.org/en-US/docs/HTML/Supported_media_formats


thank you

more options

Why only for Vista and 7?Man Add this for the XP system