Why do some Flash items not work with Opera?

[Anonymosity]

Why is it that some Flash items on some pages do not work with Opera? There is no image shown over the space for the "plugin on demand placeholder". An example of this is at
http://www.westvancouver.com/webcams/beachhousecam/
The item is about halfway down the page.
It works with Firefox, which shows the Flashblock icon over the space, but there is no placeholder image on that space with Opera.

I am wondering if maybe Opera does not deal well with iframes? I looked at the source code for that page, and found that the .swf file is contained within iframe tags. That webcam is accessible from another page that can access a large number of different webcams, and it works from there. In that page, the .swf file is within object tags, not in an iframe.
Here are the codes for both pages:

Code: Select all

<p style="text-align: center;"><iframe frameborder="0" height="400" marginheight="0" marginwidth="0" scrolling="NO" src="http://www.westvancouver.com/webcams2/beachhousecam/beachhousecam.swf" width="350"></iframe></p>

This works with Firefox with Flashblock, but not Opera with plugin on demand.

Code: Select all

<object class="embedflash" data="http://www.westvancouver.com/webcams2/beachhousecam/beachhousecam.swf" type="application/x-shockwave-flash" height="400" width="350"><param name="movie" value="http://www.westvancouver.com/webcams2/beachhousecam/beachhousecam.swf"><param name="allowfullscreen" value="true"><param name="allowscriptaccess" value="always"><small>(Either JavaScript is not active or you are using an old version of Adobe Flash Player. <a href="http://www.adobe.com/">Please install the newest Flash Player</a>.)</small>
</object>

This works fine with both browsers.

UserAgent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X; rv:1.9.2.13) Gecko Firefox/3.6.13

[Anonymosity]

There is another question I have about Flash. Some addresses to .swf work with BFilter's addition to the URL, and some do not. The most obvious difference in the two instances where I saw a difference was that one used a hostname and the other used an IP number. BFilter is a web filter that works to filter the content of web pages. What does the DNS do besides substituting an IP number for a hostname in the browser's request?

Code: Select all

<object class="embedflash" data="http://www.westvancouver.com/bf-analyze/webcams2/beachhousecam/beachhousecam.swf" type="application/x-shockwave-flash" height="400" width="350">

This works whether the "/bf-analyze" is present in the URL or not.

Code: Select all

<script type="text/javascript">
var s1 = new SWFObject('http://67.227.133.123/bf-analyze/ezstream/player/4.2.90/mediaplayer.swf','ply','320','240','9','#ffffff');
s1.addParam('allowfullscreen','true');
s1.addParam('allowscriptaccess','always');
s1.addParam('flashvars','file=camera1&streamer=rtmp://67.227.133.123/bf-analyze/live/cameras&type=video&autostart=true');
s1.write('container1');
</script>

This does not work. If I disable the use of BFilter, the URL does not have the "/bf-analyze" in it, and the webcam stream works.

The second example does not need to go through a DNS first, so is that is what makes the difference? Would the DNS remove the "/bf-analyze"?

UserAgent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X; rv:1.9.2.13) Gecko Firefox/3.6.13

[Anonymosity]

I did some experimentation, and found that the problem is in operaprefs.ini. There are a lot of settings in there, and I have no idea which one is causing the problem with the West Vancouver beachcam site. Would it be something to do with how I have file handling set up, or something else altogether?

UserAgent: Opera/9.80 (Macintosh; Intel Mac OS X 10.4.11; U; en) Presto/2.7.62 Version/11.00