- From: Ian Hickson via cvs-syncmail <cvsmail@w3.org>
- Date: Wed, 18 Aug 2010 01:13:30 +0000
- To: public-html-commits@w3.org
Update of /sources/public/html5/spec
In directory hutz:/tmp/cvs-serv2021
Modified Files:
Overview.html
Log Message:
Define the Media Timeline for <video> -- the timeline along which currentTime, duration, etc, are defined. (whatwg r5310)
Index: Overview.html
===================================================================
RCS file: /sources/public/html5/spec/Overview.html,v
retrieving revision 1.4231
retrieving revision 1.4232
diff -u -d -r1.4231 -r1.4232
--- Overview.html 16 Aug 2010 23:08:55 -0000 1.4231
+++ Overview.html 18 Aug 2010 01:13:26 -0000 1.4232
@@ -311,7 +311,7 @@
<h1>HTML5</h1>
<h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2>
- <h2 class="no-num no-toc" id="editor-s-draft-16-august-2010">Editor's Draft 16 August 2010</h2>
+ <h2 class="no-num no-toc" id="editor-s-draft-18-august-2010">Editor's Draft 18 August 2010</h2>
<dl><dt>Latest Published Version:</dt>
<dd><a href="http://www.w3.org/TR/html5/">http://www.w3.org/TR/html5/</a></dd>
<dt>Latest Editor's Draft:</dt>
@@ -417,7 +417,7 @@
Group</a> is the W3C working group responsible for this
specification's progress along the W3C Recommendation
track.
- This specification is the 16 August 2010 Editor's Draft.
+ This specification is the 18 August 2010 Editor's Draft.
</p><!-- UNDER NO CIRCUMSTANCES IS THE PRECEDING PARAGRAPH TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><!-- relationship to other work (required) --><p>Work on this specification is also done at the <a href="http://www.whatwg.org/">WHATWG</a>. The W3C HTML working group
actively pursues convergence with the WHATWG, as required by the <a href="http://www.w3.org/2007/03/HTML-WG-charter">W3C HTML working
group charter</a>.</p><!-- UNDER NO CIRCUMSTANCES IS THE FOLLOWING PARAGRAPH TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><!-- required patent boilerplate --><p>This document was produced by a group operating under the <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5
@@ -20635,8 +20635,9 @@
// playback state
attribute float <a href="#dom-media-currenttime" title="dom-media-currentTime">currentTime</a>;
- readonly attribute float <a href="#dom-media-starttime" title="dom-media-startTime">startTime</a>;
+ readonly attribute float <a href="#dom-media-initialtime" title="dom-media-initialTime">initialTime</a>;
readonly attribute float <a href="#dom-media-duration" title="dom-media-duration">duration</a>;
+ readonly attribute <span>Date</span> <a href="#dom-media-startoffsettime" title="dom-media-startOffsetTime">startOffsetTime</a>;
readonly attribute boolean <a href="#dom-media-paused" title="dom-media-paused">paused</a>;
attribute float <a href="#dom-media-defaultplaybackrate" title="dom-media-defaultPlaybackRate">defaultPlaybackRate</a>;
attribute float <a href="#dom-media-playbackrate" title="dom-media-playbackRate">playbackRate</a>;
@@ -20985,6 +20986,23 @@
<li><p>Set the <a href="#current-playback-position">current playback position</a> to
0.</li>
+ <li><p>Set the <a href="#initial-playback-position">initial playback position</a> to
+ 0.</li>
+
+ <li><p>Set the <a href="#timeline-offset">timeline offset</a> to Not-a-Number
+ (NaN).</li>
+
+ <li>
+
+ <p>Update the <code title="dom-media-duration"><a href="#dom-media-duration">duration</a></code>
+ attribute to Not-a-Number (NaN).</p>
+
+ <p class="note">The user agent <a href="#durationChange">will
+ not</a> fire a <code title="event-media-durationchange"><a href="#event-media-durationchange">durationchange</a></code> event
+ for this particular change of the duration.</p>
+
+ </li>
+
<li><p><a href="#queue-a-task">Queue a task</a> to <a href="#fire-a-simple-event">fire a simple
event</a> named <code title="event-media-emptied"><a href="#event-media-emptied">emptied</a></code> at the <a href="#media-element">media
element</a>.</li>
@@ -21380,19 +21398,38 @@
<p>This indicates that the resource is usable. The user agent
must follow these substeps:</p>
- <ol><li><p>Set the <a href="#current-playback-position">current playback position</a> to the
- <a href="#earliest-possible-position">earliest possible position</a>.</li>
+ <ol><li>
- <li><p>Set the <code title="dom-media-readyState"><a href="#dom-media-readystate">readyState</a></code> attribute to
- <code title="dom-media-HAVE_METADATA"><a href="#dom-media-have_metadata">HAVE_METADATA</a></code>.</li>
+ <p><a href="#defineTimeline">Establish the media timeline</a> for the purposes
+ of the <a href="#current-playback-position">current playback position</a>, the
+ <a href="#earliest-possible-position">earliest possible position</a>, and the <a href="#initial-playback-position">initial
+ playback position</a>, based on the <a href="#media-data">media
+ data</a>.</p>
- <li><p>For <code><a href="#video">video</a></code> elements, set the <code title="dom-video-videoWidth"><a href="#dom-video-videowidth">videoWidth</a></code> and <code title="dom-video-videoHeight"><a href="#dom-video-videoheight">videoHeight</a></code>
- attributes.</li>
+ </li>
<li>
- <p>Set the <code title="dom-media-duration"><a href="#dom-media-duration">duration</a></code>
- attribute to the duration of the resource.</p>
+ <p>Update the <a href="#timeline-offset">timeline offset</a> to the date and
+ time that corresponds to the zero time in the <a href="#media-timeline">media
+ timeline</a> established in the previous step, if any. If
+ no explicit time and date is given by the <a href="#media-resource">media
+ resource</a>, the <a href="#timeline-offset">timeline offset</a> must be set
+ to Not-a-Number (NaN).</p>
+
+ </li>
+
+ <li><p>Set the <a href="#current-playback-position">current playback position</a> to the
+ <a href="#earliest-possible-position">earliest possible position</a>.</li>
+
+ <li>
+
+ <p>Update the <code title="dom-media-duration"><a href="#dom-media-duration">duration</a></code>
+ attribute with the time of the last frame of the resource, if
+ known, on the <a href="#media-timeline">media timeline</a> established above.
+ If it is not known (e.g. a stream that is in principle
+ infinite), update the <code title="dom-media-duration"><a href="#dom-media-duration">duration</a></code> attribute to the
+ value positive Infinity.</p>
<p class="note">The user agent <a href="#durationChange">will</a> <a href="#queue-a-task">queue a task</a> to
<a href="#fire-a-simple-event">fire a simple event</a> named <code title="event-media-durationchange"><a href="#event-media-durationchange">durationchange</a></code> at the
@@ -21400,6 +21437,12 @@
</li>
+ <li><p>Set the <code title="dom-media-readyState"><a href="#dom-media-readystate">readyState</a></code> attribute to
+ <code title="dom-media-HAVE_METADATA"><a href="#dom-media-have_metadata">HAVE_METADATA</a></code>.</li>
+
+ <li><p>For <code><a href="#video">video</a></code> elements, set the <code title="dom-video-videoWidth"><a href="#dom-video-videowidth">videoWidth</a></code> and <code title="dom-video-videoHeight"><a href="#dom-video-videoheight">videoHeight</a></code>
+ attributes.</li>
+
<li id="fire-loadedmetadata">
<p><a href="#queue-a-task">Queue a task</a> to <a href="#fire-a-simple-event">fire a simple
@@ -21414,9 +21457,10 @@
<li>
- <p>If either the <a href="#media-resource">media resource</a> or the address
- of the <var title="">current media resource</var> indicate a
- particular start time, then <a href="#dom-media-seek" title="dom-media-seek">seek</a> to that time. Ignore any
+ <p>If either the <a href="#media-resource">media resource</a> or the address of
+ the <var title="">current media resource</var> indicate a
+ particular start time, then set the <a href="#initial-playback-position">initial playback
+ position</a> to that time and then seek <a href="#dom-media-seek" title="dom-media-seek">seek</a> to that time. Ignore any
resulting exceptions (if the position is out of range, it is
effectively ignored).</p>
@@ -21719,7 +21763,8 @@
<dd>
<p>Returns the length of the <a href="#media-resource">media resource</a>, in
- seconds.</p>
+ seconds, assuming that the start of the <a href="#media-resource">media
+ resource</a> is at time zero.</p>
<p>Returns NaN if the duration isn't available.<p>
@@ -21742,53 +21787,96 @@
</dd>
- <dt><var title="">media</var> . <code title="dom-media-startTime"><a href="#dom-media-starttime">startTime</a></code></dt>
+ <dt><var title="">media</var> . <code title="dom-media-initialTime"><a href="#dom-media-initialtime">initialTime</a></code></dt>
<dd>
- <p>Returns the <a href="#earliest-possible-position">earliest possible position</a>, in
- seconds. This is the time for the start of the current clip. It
- might not be zero if the clip's timeline is not zero-based, or if
- the resource is a streaming resource (in which case it gives the
- earliest time that the user agent is able to seek back to).</p>
+ <p>Returns the <a href="#initial-playback-position">initial playback position</a>, that is, time
+ to which the <a href="#media-resource">media resource</a> was automatically seeked
+ when it was loaded. Returns zero if the <a href="#initial-playback-position">initial playback
+ position</a> is still unknown.</p>
</dd>
</dl><div class="impl">
- <p>The <dfn id="dom-media-duration" title="dom-media-duration"><code>duration</code></dfn>
- attribute must return the length of the <a href="#media-resource">media resource</a>,
- in seconds. If no <a href="#media-data">media data</a> is available, then the
- attributes must return the Not-a-Number (NaN) value. If the
- <a href="#media-resource">media resource</a> is known to be unbounded (e.g. a
- streaming radio), then the attribute must return the positive
- Infinity value.</p>
+ <p>A <a href="#media-resource">media resource</a> has a <dfn id="media-timeline">media timeline</dfn>
+ that maps times (in seconds) to positions in the <a href="#media-resource">media
+ resource</a>. The origin of a timeline is its earliest defined
+ position. The duration of a timeline is its last defined
+ position.</p>
- <p>The user agent must determine the duration of the <a href="#media-resource">media
- resource</a> before playing any part of the <a href="#media-data">media
- data</a> and before setting <code title="dom-media-readyState"><a href="#dom-media-readystate">readyState</a></code> to a value equal to
- or greater than <code title="dom-media-HAVE_METADATA"><a href="#dom-media-have_metadata">HAVE_METADATA</a></code>, even if doing
- so requires seeking to multiple parts of the resource.</p>
+ <p><dfn id="defineTimeline" title="establish the media
+ timeline">Establishing the media timeline</dfn>: If the <a href="#media-resource">media
+ resource</a> somehow specifies an explicit timeline whose origin
+ is not negative, then the <a href="#media-timeline">media timeline</a> should be that
+ timeline. (Whether the <a href="#media-resource">media resource</a> can specify a
+ timeline or not depends on the <a href="#media-resource" title="media resource">media
+ resource's</a> format.) If the <a href="#media-resource">media resource</a>
+ specifies an explicit start time <em>and date</em>, then that time
+ and date should be considered the zero point in the <a href="#media-timeline">media
+ timeline</a>; the <a href="#timeline-offset">timeline offset</a> will be the time
+ and date, exposed using the <code title="dom-media-startOffsetTime"><a href="#dom-media-startoffsettime">startOffsetTime</a></code>
+ attribute.</p>
- <p id="durationChange">When the length of the <a href="#media-resource">media
- resource</a> changes (e.g. from being unknown to known, or from a
- previously established length to a new length) the user agent must
- <a href="#queue-a-task">queue a task</a> to <a href="#fire-a-simple-event">fire a simple event</a> named
- <code title="event-media-durationchange"><a href="#event-media-durationchange">durationchange</a></code> at the
- <a href="#media-element">media element</a>.</p>
+ <p>If the <a href="#media-resource">media resource</a> has a discontinuous timeline,
+ the user agent must extend the timeline used at the start of the
+ resource across the entire resource, so that the <a href="#media-timeline">media
+ timeline</a> of the <a href="#media-resource">media resource</a> increases
+ linearly starting from the <a href="#earliest-possible-position">earliest possible position</a>
+ (as defined below), even if the underlying <a href="#media-data">media data</a>
+ has out-of-order or even overlapping time codes.</p>
- <p class="example">If an "infinite" stream ends for some reason,
- then the duration would change from positive Infinity to the time of
- the last frame or sample in the stream, and the <code title="event-media-durationchange"><a href="#event-media-durationchange">durationchange</a></code> event would be
- fired. Similarly, if the user agent initially estimated the
- <a href="#media-resource">media resource</a>'s duration instead of determining it
- precisely, and later revises the estimate based on new information,
- then the duration would change and the <code title="event-media-durationchange"><a href="#event-media-durationchange">durationchange</a></code> event would be
- fired.</p>
+ <p class="example">For example, if two clips have been concatenated
+ into one video file, but the video format exposes the original times
+ for the two clips, the video data might expose a timeline that goes,
+ say, 00:15..00:29 and then 00:05..00:38. However, the user agent
+ would not expose those times; it would instead expose the times as
+ 00:15..00:29 and 00:29..01:02, as a single video.</p>
+
+ <p>In the absence of an explicit timeline, the zero time on the
+ <a href="#media-timeline">media timeline</a> should correspond to the first frame of
+ the <a href="#media-resource">media resource</a>. For static audio and video files
+ this is generally trivial. For streaming resources, if the user
+ agent will be able to seek to an earlier point than the first frame
+ originally provided by the server, then the zero time should
+ correspond to the earliest seekable time of the <a href="#media-resource">media
+ resource</a>; otherwise, it should correspond to the first frame
+ received from the server (the point in the <a href="#media-resource">media
+ resource</a> at which the user agent began receiving the
+ stream).</p>
+
+ <p class="example">Another example would be a stream that carries a
+ video with several concatenated fragments, broadcast by a server
+ that does not allow user agents to request specific times but
+ instead just streams the video data in a predetermined order. If a
+ user agent connects to this stream and receives fragments defined as
+ covering timestamps 2010-03-20 23:15:00 UTC to 2010-03-21 00:05:00
+ UTC and 2010-02-12 14:25:00 UTC to 2010-02-12 14:35:00 UTC, it would
+ expose this with a <a href="#media-timeline">media timeline</a> starting at 0s and
+ extending to 3,600s (one hour). Assuming the streaming server
+ disconnected at the end of the second clip, the <code title="dom-media-duration"><a href="#dom-media-duration">duration</a></code> attribute would then
+ return 3,600. The <code title="dom-media-startOffsetTime"><a href="#dom-media-startoffsettime">startOffsetTime</a></code> attribute
+ would return a <code>Date</code> object with a time corresponding to
+ 2010-03-20 23:15:00 UTC. However, if a different user agent
+ connected five minutes later, <em>it</em> would (presumably) receive
+ fragments covering timestamps 2010-03-20 23:20:00 UTC to 2010-03-21
+ 00:05:00 UTC and 2010-02-12 14:25:00 UTC to 2010-02-12 14:35:00 UTC,
+ and would expose this with a <a href="#media-timeline">media timeline</a> starting at
+ 0s and extending to 3,300s (fifty five minutes). In this case, the
+ <code title="dom-media-startOffsetTime"><a href="#dom-media-startoffsettime">startOffsetTime</a></code>
+ attribute would return a <code>Date</code> object with a time
+ corresponding to 2010-03-20 23:20:00 UTC.</p>
+
+ <p>In any case, the user agent must ensure that the <a href="#earliest-possible-position">earliest
+ possible position</a> (as defined below) using the established
+ <a href="#media-timeline">media timeline</a>, is greater than or equal to zero.</p>
<p><a href="#media-element" title="media element">Media elements</a> have a
- <dfn id="current-playback-position">current playback position</dfn>, which must initially be
- zero. The current position is a time.</p>
+ <dfn id="current-playback-position">current playback position</dfn>, which must initially (i.e. in
+ the absence of <a href="#media-data">media data</a>) be zero seconds. The
+ <a href="#current-playback-position">current playback position</a> is a time on the <a href="#media-timeline">media
+ timeline</a>.</p>
<p>The <dfn id="dom-media-currenttime" title="dom-media-currentTime"><code>currentTime</code></dfn>
attribute must, on getting, return the <a href="#current-playback-position">current playback
@@ -21796,16 +21884,30 @@
must <a href="#dom-media-seek" title="dom-media-seek">seek</a> to the new value
(which might raise an exception).</p>
+ <p><a href="#media-element" title="media element">Media elements</a> have an
+ <dfn id="initial-playback-position">initial playback position</dfn>, which must initially (i.e. in
+ the absence of <a href="#media-data">media data</a>) be zero seconds. The
+ <a href="#initial-playback-position">initial playback position</a> is updated when a <a href="#media-resource">media
+ resource</a> is loaded. The <a href="#initial-playback-position">initial playback
+ position</a> is a time on the <a href="#media-timeline">media timeline</a>.</p>
+
+ <p>The <dfn id="dom-media-initialtime" title="dom-media-initialTime">initialTime<code></code></dfn>
+ attribute must, on getting, return the <a href="#initial-playback-position">initial playback
+ position</a>, expressed in seconds.</p>
+
<p>If the <a href="#media-resource">media resource</a> is a streaming resource, then
the user agent might be unable to obtain certain parts of the
- resource after it has expired from its buffer. Similarly, some <a href="#media-resource" title="media resource">media resources</a> might have a timeline
- that doesn't start at zero. The <dfn id="earliest-possible-position">earliest possible
- position</dfn> is the earliest position in the stream or resource
- that the user agent can ever obtain again.</p>
+ resource after it has expired from its buffer. Similarly, some <a href="#media-resource" title="media resource">media resources</a> might have a
+ <a href="#media-timeline">media timeline</a> that doesn't start at zero. The
+ <dfn id="earliest-possible-position">earliest possible position</dfn> is the earliest position in
+ the stream or resource that the user agent can ever obtain
+ again. It is also a time on the <a href="#media-timeline">media timeline</a>.</p>
- <p>The <dfn id="dom-media-starttime" title="dom-media-startTime"><code>startTime</code></dfn>
- attribute must, on getting, return the <a href="#earliest-possible-position">earliest possible
- position</a>, expressed in seconds.</p>
+ <p class="note">The <a href="#earliest-possible-position">earliest possible position</a> is not
+ explicitly exposed in the API; it corresponds to the start time of
+ the first range in the <code title="dom-media-seekable"><a href="#dom-media-seekable">seekable</a></code> attribute's
+ <code><a href="#timeranges">TimeRanges</a></code> object, if any, or the <a href="#current-playback-position">current
+ playback position</a> otherwise.</p>
<p>When the <a href="#earliest-possible-position">earliest possible position</a> changes, then:
if the <a href="#current-playback-position">current playback position</a> is before the
@@ -21821,19 +21923,47 @@
known</a>, the <a href="#current-playback-position">current playback position</a> can never be
less than the <a href="#earliest-possible-position">earliest possible position</a>.</p>
- <p>User agents must act as if the timeline of the <a href="#media-resource">media
- resource</a> increases linearly starting from the <a href="#earliest-possible-position">earliest
- possible position</a>, even if the underlying <a href="#media-data">media
- data</a> has out-of-order or even overlapping time codes.</p>
+ <p>The <dfn id="dom-media-duration" title="dom-media-duration"><code>duration</code></dfn>
+ attribute must return the time of the end of the <a href="#media-resource">media
+ resource</a>, in seconds, on the <a href="#media-timeline">media timeline</a>. If
+ no <a href="#media-data">media data</a> is available, then the attributes must
+ return the Not-a-Number (NaN) value. If the <a href="#media-resource">media
+ resource</a> is known to be unbounded (e.g. a streaming radio),
+ then the attribute must return the positive Infinity value.</p>
- <p class="example">For example, if two clips have been concatenated
- into one video file, but the video format exposes the original times
- for the two clips, the video data might expose a timeline that goes,
- say, 00:15..00:29 and then 00:05..00:38. However, the user agent
- would not expose those times; it would instead expose the times as
- 00:15..00:29 and 00:29..01:02, as a single video.</p>
+ <p>The user agent must determine the duration of the <a href="#media-resource">media
+ resource</a> before playing any part of the <a href="#media-data">media
+ data</a> and before setting <code title="dom-media-readyState"><a href="#dom-media-readystate">readyState</a></code> to a value equal to
+ or greater than <code title="dom-media-HAVE_METADATA"><a href="#dom-media-have_metadata">HAVE_METADATA</a></code>, even if doing
+ so requires fetching multiple parts of the resource.</p>
- </div><p>The <dfn id="attr-media-loop" title="attr-media-loop"><code>loop</code></dfn>
+ <p id="durationChange">When the length of the <a href="#media-resource">media
+ resource</a> changes to a known value (e.g. from being unknown to
+ known, or from a previously established length to a new length) the
+ user agent must <a href="#queue-a-task">queue a task</a> to <a href="#fire-a-simple-event">fire a simple
+ event</a> named <code title="event-media-durationchange"><a href="#event-media-durationchange">durationchange</a></code> at the
+ <a href="#media-element">media element</a>. (The event is not fired when the
+ duration is reset as part of loading a new media resource.)</p>
+
+ <p class="example">If an "infinite" stream ends for some reason,
+ then the duration would change from positive Infinity to the time of
+ the last frame or sample in the stream, and the <code title="event-media-durationchange"><a href="#event-media-durationchange">durationchange</a></code> event would
+ be fired. Similarly, if the user agent initially estimated the
+ <a href="#media-resource">media resource</a>'s duration instead of determining it
+ precisely, and later revises the estimate based on new information,
+ then the duration would change and the <code title="event-media-durationchange"><a href="#event-media-durationchange">durationchange</a></code> event would
+ be fired.</p>
+
+ <p>Some video files also have an explicit date and time
+ corresponding to the zero time in the <a href="#media-timeline">media timeline</a>,
+ known as the <dfn id="timeline-offset">timeline offset</dfn>. Initially, the
+ <a href="#timeline-offset">timeline offset</a> must be set to Not-a-Number (NaN).</p>
+
+ <p>The <dfn id="dom-media-startoffsettime" title="dom-media-startOffsetTime"><code>startOffsetTime</code></dfn>
+ attribute must return a new <code>Date</code> object representing
+ the current <a href="#timeline-offset">timeline offset</a>.</p>
+
+ </div><hr><p>The <dfn id="attr-media-loop" title="attr-media-loop"><code>loop</code></dfn>
attribute is a <a href="#boolean-attribute">boolean attribute</a> that, if specified,
indicates that the <a href="#media-element">media element</a> is to seek back to the
start of the <a href="#media-resource">media resource</a> upon reaching the end.<div class="impl">
@@ -22536,9 +22666,11 @@
<a href="#media-resource">media resource</a>, e.g. because it a simple movie file and
the user agent and the server support HTTP Range requests, then the
attribute would return an object with one range, whose start is the
- time of the first frame (typically zero), and whose end is the same
- as the time of the first frame plus the <code title="dom-media-duration"><a href="#dom-media-duration">duration</a></code> attribute's value (which
- would equal the time of the last frame).</p>
+ time of the first frame (the <a href="#earliest-possible-position">earliest possible
+ position</a>, typically zero), and whose end is the same as the
+ time of the first frame plus the <code title="dom-media-duration"><a href="#dom-media-duration">duration</a></code> attribute's value (which
+ would equal the time of the last frame, and might be positive
+ Infinity).</p>
<p class="note">The range might be continuously changing, e.g. if
the user agent is buffering a sliding window on an infinite
@@ -22713,8 +22845,8 @@
overlap, aren't empty, and don't touch (adjacent ranges are folded
into one bigger range).</p>
- <p>The timelines used by the objects returned by the <code title="dom-media-buffered"><a href="#dom-media-buffered">buffered</a></code>, <code title="dom-media-seekable"><a href="#dom-media-seekable">seekable</a></code> and <code title="dom-media-played"><a href="#dom-media-played">played</a></code> IDL attributes of <a href="#media-element" title="media element">media elements</a> must be the same as that
- element's <a href="#media-resource">media resource</a>'s timeline.</p>
+ <p>The timelines used by the objects returned by the <code title="dom-media-buffered"><a href="#dom-media-buffered">buffered</a></code>, <code title="dom-media-seekable"><a href="#dom-media-seekable">seekable</a></code> and <code title="dom-media-played"><a href="#dom-media-played">played</a></code> IDL attributes of <a href="#media-element" title="media element">media elements</a> must be that element's
+ <a href="#media-timeline">media timeline</a>.</p>
</div><h5 id="mediaevents"><span class="secno">4.8.9.12 </span>Event summary</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i><p><i>This section is non-normative.</i><p>The following events fire on <a href="#media-element" title="media element">media
elements</a> as part of the processing model described above:<table><thead><tr><th>Event name
Received on Wednesday, 18 August 2010 01:13:32 UTC