[whatwg] HTML5 video: frame accuracy / SMPTE

Eric Carlson eric.carlson at apple.com
Tue Jan 11 10:10:36 PST 2011

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?


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