Multimedia: Video, Audio, and Embedded Media - HTML5 Mastery: Semantics, Standards, and Styling - page 217

<track kind="subtitles" label="English Sub-

titles" srclang="en"
src="trailer_st_en.vtt" />
<track kind="subtitles" label="German Subtitles"
srclang="de"
src="trailer_st_de.vtt" />
<track kind="subtitles" label="French Subtitles"
srclang="fr"
src="trailer_st_fr.vtt" />

</video>
Note There is a proposal under discussion to allow the track element to include
the source element so timed text could be provided in various formats. This would
work as a fallback mechanism for the browsers in the same way it works for video and
audio media.

Encoding audio and video

Encoding media files is a topic that could easily fill a whole book, so I'll just direct you
toward some tools that will help you generate WebM, Ogg, Ogg Vorbis, MPEG-4, and
ACC files to work with:
• HandBrake : This is an open source transcoder for generating .mp4 files. See
http://handbrake.fr .
• Firefogg : This is a Firefox extension for performing Ogg encoding. See ht-
tp://firefogg.org .
• FFmpeg : This is a very powerful open source suite of tools that includes a
command-line tool for converting between different media formats. It's used in
other tools, such as Firefogg. See http://ffmpeg.org . 15
• Miro video converter : This is an easy-to-use drag-and-drop converter for video
formats found on the Web and on mobile devices. It's Mac only, however. See
www.mirovideoconverter.com/ .
• VLC : This is a flexible media player that has no problem handling all the web
video and audio formats you may deal with. It features an export wizard for
converting between different formats. See http://videolan.org/vlc/ .
• Adobe Media Encoder : If you have Adobe software on your computer, you
may have a copy of the Adobe Media Encoder, which can import popular video