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[whatwg] HTML5 video: frame accuracy / SMPTE

From: Rob Coenen <coenen.rob@gmail.com>
Date: Tue, 11 Jan 2011 20:54:04 +0000
Message-ID: <AANLkTinH7WzYAHG1L8=u+6Ju03zTy7C2rhHF01C4ANJJ@mail.gmail.com>
Eric, not sure if I understand what you mean. Are you referring to digitally
encoded files where frame #1 has a different duration than frame #2?

On Tue, Jan 11, 2011 at 6:10 PM, Eric Carlson <eric.carlson at apple.com>wrote:

>
> On Jan 11, 2011, at 9:54 AM, Rob Coenen wrote:
>
> > just a follow up question in relation to SMPTE / frame accurate playback:
> As
> > far as I can tell there is nothing specified in the HTML5 specs that will
> > allow us to determine the actual frame rate (FPS) of a movie? In order to
> do
> > proper time-code calculations it's essential to know both the
> video.duration
> > and video.fps - and all I can find in the specs is video.duration,
> nothing
> > in video.fps
> >
>   What does "frames per second" mean for a digitally encoded video file,
> where frames can have arbitrary duration?
>
> eric
>
>
>
Received on Tuesday, 11 January 2011 12:54:04 UTC

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