RE: Initial value of ttp:markerMode

SMPTE timecode is often discontinuous due to post production edits, and (in the US for non-integer framerates) always dropframe mode, and common practice is to start the first frame of the media at 1 hour (not zero), thus making presentation time undefined.  So, SMPTE timecode is nearly always marker mode.  The special case is actually when it is usable as a non-marker timebase.

 

Regards,

 

                Mike

 

From: Glenn Adams [mailto:glenn@skynav.com] 
Sent: Wednesday, May 23, 2012 11:45 PM
To: Andreas Tai
Cc: public-tt@w3.org
Subject: Re: Initial value of ttp:markerMode

 

I have never thought that markerMode was intended to primarily express discontinuous markers. When we created this property, the discontinuous mode was thought to be an exception rather than the default. So without considerable further discussion, I would hesitate to accept this proposal.

On Thu, May 24, 2012 at 12:27 AM, Andreas Tai <tai@irt.de> wrote:

I would like to propose to change the initial value of markerMode from contineous to discontineous. As seen in discussions the intended meaning of markermode aligns more with the expressed meaning of markermode "discontineous".

What do you think?

Best regards,

Andreas

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