HTML5 video, poster img doesnt show in IE - css

Question

I've got a small problem - I have a HTML5 video om my site, it works fine in FF, Chrome, Safari. However, it only shows the video in IE if I set autoplay="autoplay". Somehow it doesn't show the poster img - You can see it here, http://test.jsworldmedia.com/ Just press See Video. Anyone know what is wrong?
The code is:
<video id="videoContainer" width="932" height="524" controls="controls" poster="/media/13037/big_buck_bunny_poster.jpg">
<source src="http://test.jsworldmedia.com/media/13010/big_buck_bunny.mp4" type="video/mp4" />
<source src="http://test.jsworldmedia.com/media/13555/big_buck_bunny.ogv" type="video/ogg" />
<source src="http://test.jsworldmedia.com/media/13034/big_buck_bunny.webm" type="video/webm" />
<object id="flash_fallback_1" class="vjs-flash-fallback" width="932" height="524" type="application/x-shockwave-flash" data="http://releases.flowplayer.org/swf/flowplayer-3.2.1.swf">
<param name="movie" value="http://releases.flowplayer.org/swf/flowplayer-3.2.1.swf" />
<param name="allowfullscreen" value="true" />
<param name="flashvars" value="config={'playlist':['http://test.jsworldmedia.com/media/13037/big_buck_bunny_poster.jpg', {'url': 'http://test.jsworldmedia.com/media/13010/big_buck_bunny.mp4','autoPlay':false,'autoBuffering':true}]}" />
<img src="http://test.jsworldmedia.com/media/13037/big_buck_bunny_poster.jpg" width="932" height="542" alt="" title="No video playback capabilities." />
</object>
</video>

Answer 1

IE9 overwrites the poster image if some of the video is loaded, which is the default. If you add the attribute preload="none" the poster image will work in IE9.
Not ideal.
edit
I've written about this and have also filed a bug report with the W3C as I think that it needs to be changed.

Answer 2

I have found the poster attribute to be too inconsistent. For me, preload="none" only fixed the IE 9 problem.
You are better off editing your video so that the poster image is the first frame of your video.
I am a big fan of this Video for Everybody site which outlines exactly how one should implement the html5 <video> tag with fallbacks. The author talks specifically about the poster attribute, mentioning inconsistent support and a major bug in iOS 3.x as reasons to encode the poster image into the first frame of your video.
You can also check out VideoJs which will handle many of the cross browser issues.
EDIT (2012-11-04): VideoJs may not be a good option, major issues reported with IE 9.

Answer 3

I had the same issue. I did the following to have the poster working in IE8 and IE9.
In html file add an image bellow the video element with the poster as src:
<img id="video-poster" width="460px" height="260px" src="img/video_poster.jpg">
In css file add:
#video-poster {position: absolute; z-index: 600; display: none;}`
Note that the parent need to have in css position: relative
In JS file add:
/**
* fix the following issue: "video preview not showing properly on IE8 and IE9"
*/
(function ($) {
var browserIEInfo = navigator.userAgent.match(/MSIE (([0-9]+)(\.[0-9]+)?)/);
if (browserIEInfo === null || parseInt(browserIEInfo[2]) > 9){
return;
}
if (parseInt(browserIEInfo[2]) < 9 && !isFlashSupported()) {
return;
}
var video = $('video'); // use element id if there is more than 1 video
var videoPoster = $('#video-poster');
$( window ).resize(function() {
fixVideoCoverPosition();
});
fixVideoCoverPosition();
videoPoster.show();
videoPoster.click(function() {
video.get(0).play()
});
video.on('playing', function() {
videoPoster.hide();
});
video.on('ended', function() {
videoPoster.show();
});
function isFlashSupported() {
var hasFlash = false;
try {
new ActiveXObject('ShockwaveFlash.ShockwaveFlash');
} catch (e) {
var mimeTypes = navigator.mimeTypes;
if (mimeTypes
&& mimeTypes['application/x-shockwave-flash'] !== undefined
&& mimeTypes['application/x-shockwave-flash']['enabledPlugin']
) {
hasFlash = true;
}
}
return hasFlash;
}
function fixVideoCoverPosition() {
var videoPosition = video.position();
video.width();
$('#video-poster').css({
top: videoPosition.top,
left: videoPosition.left,
width: video.width(),
height: video.height()
});
}
}(jQuery));