- From: Andreas Tai <tai@irt.de>
- Date: Mon, 28 May 2012 18:39:49 +0200
- To: public-tt@w3.org, Glenn Adams <glenn@skynav.com>
- Message-ID: <4FC3AA55.4060908@irt.de>
That´s exactly the point. I would support to have a separate bullet point for smpte continuous. Am 28.05.2012 16:29, schrieb Glenn Adams: > > On Mon, May 28, 2012 at 7:35 AM, Andreas Tai <tai@irt.de > <mailto:tai@irt.de>> wrote: > > Thanks, Glenn for clarification. That´s the same how I understand it. > > I would therefore propose the following change in chapter 10.4 > Time Intervals: > > => 4th bullet point > > Now: > "If the governing time mode is media or smpte with mode > continuous, then time expressions must be interpreted as > equivalent to offset based timing in [SMIL 2.1], namely, as > offsets from an implicit syncbase." > > Change Proposal: > "If the governing time mode is media, then time expressions must > be interpreted as equivalent to offset based timing in [SMIL 2.1], > namely, as offsets from an implicit syncbase." > > > The current text is correct since for smpte time base with continuous > marker mode, time expressions are in fact equivalent to offset based > timing, where the start of the implicit syncbase for tt:tt is > 00:00:00.0. However, given the following bullet in 10.4 (about smpte > discontinuous begin equivalent to marker values), I can see how one > may read 10.4 as saying that smpte continuous mode does not entail > marker values. The intention is that smpte continuous be marker values > that are equivalent to offset based timing (due to satisfaction of > continuity and monotonicity). Perhaps breaking out smpte continuous > into its own bullet would be the way to better express this intention. > > > > -- ------------------------------------------------ Andreas Tai Production Systems Television IRT - Institut fuer Rundfunktechnik GmbH R&D Institute of ARD, ZDF, DRadio, ORF and SRG/SSR Floriansmuehlstrasse 60, D-80939 Munich, Germany Phone: +49 89 32399-389 | Fax: +49 89 32399-200 http: www.irt.de | Email: tai@irt.de ------------------------------------------------ registration court& managing director: Munich Commercial, RegNo. B 5191 Dr. Klaus Illgner-Fehns ------------------------------------------------
Received on Monday, 28 May 2012 17:07:58 UTC