HTML and CSS Reference
In-Depth Information
The video format contenders
The reality is, if you're going to be serving content to a wide spectrum of users,
you're going to have to supply more than one format. On the other hand, if all
you care about is, say, the Apple iPad, you may be able to get away with just one.
Today we have three main contenders—let's have a look at them:
MP4 container with
H.264 video and AAC audio
WebM container with
VP8 video and Vorbis audio
H.264 is licensed by the MPEG-LA
group.
WebM was designed by Google to
work with VP8-encoded videos.
There is more than one kind of
H.264; each is known as a “profile.”
WebM/VP8 is supported by Firefox,
Chrome, and Opera.
MP4/H.264 is supported by Safari
and IE9+. You may find support in
some versions of Chrome.
You'll find WebM-formatted videos
with the .webm extension.
Ogg container with
Theora video and Vorbis audio
Theora is an open source codec.
H.264 is the
industry darli
ng,
but not the
reigning champ
…
Video encoded with Theora is
usually contained in an Ogg file,
with the .ogv file extension.
Theora is the op
en
source alternati
ve.
Ogg/Theora is supported by
Firefox, Chrome, and Opera.
V
P8, the conten
der,
i
s backed by Goo
gle,
s
upported by oth
ers, and
c
oming on strong
…
