- From: Eric Carlson <eric.carlson@apple.com>
- Date: Fri, 13 Aug 2010 19:26:30 -0700
Hi Chris -
On Aug 13, 2010, at 6:48 PM, Chris Double wrote:
> On Sat, Aug 14, 2010 at 4:05 AM, Zachary Ozer <zach at longtailvideo.com> wrote:
>>
>> It would still be nice if the <video> made dropped frame information
>> available, but that's probably not in the cards.
>>
>
> I have a work in progress bug with patch that adds this to the <video>
> implementation in Firefox:
>
> https://bugzilla.mozilla.org/show_bug.cgi?id=580531
>
> It adds a 'mozDroppedFrames' as well as a couple of other stats people
> have queried about here (download rate, framerate, etc). I'd be keen
> to see something like this get discussed/added.
>
I see the following additions:
interface HTMLMediaElement
{
readonly attribute float mozDownloadRate;
readonly attribute float mozPlaybackRate;
};
interface HTMLVideoElement
{
readonly attribute unsigned long mozFrameCount;
readonly attribute unsigned long mozDroppedFrames;
};
A few questions:
mozDownloadRate - What are the units, bit per second?
mozPlaybackRate - Is this the movie's data rate (total bytes / duration)?
mozFrameCount - What do you propose a UA report for a partually downloaded VBR movie, or for a movie in a container that doesn't have a header (ie. one where you don't know the fame count until you have examined every byte in the file)?
eric
Received on Friday, 13 August 2010 19:26:30 UTC