[foms] Proposal: adaptive streaming using open codecs

[Philip Jägenstedt]

On Mon, 01 Nov 2010 23:36:30 +0100, Christopher Blizzard  
<blizzard at mozilla.com> wrote:

> On 10/29/2010 5:59 AM, Jeroen Wijering wrote:
>> Isn't there a way to detect this in javascript, like in ationscript  
>> with Event.ACTIVATE? Next, the frames that get dropped b/c the video is  
>> not in focus are not counted.
>
> One of the reasons why we've got our own pipeline in Firefox was so that
> we could do optimizations like this.  Basically if the video is obscured
> there's no reason to run the video decoder.  Could save a lot of CPU &
> battery for a lot of use cases.
>
>> Perhaps even better to pause video when it's in a background tab.  
>> Moreover, perhaps user-agents should enforce this ...
>
> We would LOVE to be able to enforce this.  :)

When doing either of the above, what would you do when the video once  
again becomes visible? Decode from the previous keyframe, or show nothing  
until the next keyframe?

-- 
Philip Jägenstedt
Core Developer
Opera Software