[theora] bad news: IE9 with HTML5+h264

Silvia Pfeiffer silviapfeiffer1 at gmail.com
Thu Mar 18 17:36:46 PDT 2010

On Fri, Mar 19, 2010 at 3:10 AM, Christopher Blizzard
<blizzard at mozilla.com> wrote:
> On 3/18/2010 4:56 AM, startx wrote:
>> what that means for web developer is that if you have at least to
>> consider mobile users, you either go for h.264 or you have to have
>> two version of every video (which is not really an option for larger
>> projects)
> You kind of need many versions of every video anyway.  iPhone, for
> example, only supports baseline so if you want something that's high
> quality you need something for desktops.  That's two encodes to start,
> not to mention support for many different kinds of bitrates...
> ...it's h.264 turtles all the way down.

I was going to make a similar point: if you want to support video both
for desktop and mobile from the same site, you need a desktop H.264
version and you need 3gpp for mobile - that's already 2 versions. I
believe YouTube has something like half a dozen versions of each video
- and that's a large site. So, yes, keeping many versions of a video
for large sites is not just a possibility, it's a requirement.


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