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RE: Visual objects over video in SMIL 3.0?

From: Jose Ramirez <jose@multimedia4everyone.com>
Date: Sat, 04 Oct 2008 16:23:19 -0700
Message-Id: <20081004162319.b2847c7f7a0854ca7e7f9f1a81c09b12.aebb47759b.wbe@email.secureserver.net>
To: "Jack Jansen" <Jack.Jansen@cwi.nl>
Cc: www-smil@w3.org



-------- Original Message --------
Subject: Re: Visual objects over video in SMIL 3.0?
From: Jack Jansen <Jack.Jansen@cwi.nl>
Date: Sat, October 04, 2008 3:32 pm
To: jose@multimedia4everyone.com
Cc: www-smil@w3.org


On  4-Oct-2008, at 18:44 , jose@multimedia4everyone.com wrote:



Hello, 

I notice that in Opera's SVG implementation, images and svg graphics can
lay over a video element, as in this test: 

http://multimedia4everyone.com/xiph_it/svg_video_test_2.zip

I imagine that if a SMIL 3.0 player supported SVG it would be able to do
the same. 

The question I have is, can SMIL 3.0's visual elements lay over a SMIL
video element?

Is this up to the implementers discretion or does this feature need to
be specified in a Recommendation? 



This has been in the SMIL spec since SMIL 1.0, and as far as I know
every player also supports it, to some extent.


To qualify the "to some extent" (as far s I know the details, and as far
as my memory is correct): 


Ambulant 1.8 doesn't support it on Windows, but the next release will.
But: it does not support 4-channel TIFF/PNG images, so only for text,
smilText, gif and through mediaBackgroundOpacity and friends. On
Mac/Linux support should be pretty good in 1.8 already.


RealPlayer supports it for text/realtext/gif, I'm not sure about
4-channel images.


GRiNS supports it on Linux and Mac, but again doesn't support 4-channel
images.






 --
 Jack Jansen, <Jack.Jansen@cwi.nl>, http://www.cwi.nl/~jack
 If I can't dance I don't want to be part of your revolution -- Emma
Goldman
 


Hello Jack,

Can't wait to try Dirac video in a SMIL presentation.
Dirac may represent the future of video.

Any chance for a prebuilt Ambulant for Ubuntu, 
moving away from Windows :)

On Linux RealPlayer 11, using the same video and png as in the zip file
the video does not play in the transparent window of the image. Even if
the image is changed to a gif.


jose

------------------------------------------------------------------------------------------

<smil xmlns="http://www.w3.org/2001/SMIL20/Language" >



<head>

<meta name="title" content="test" />

<layout>

<root-layout id="test_1" title="test" width="750" height="400" />

<region id="region_v"  title="test" top="0" left="0" width="750"
height="400" z-index="1" />

<region id="region_i" title="test"  top="10" left="10" width="750"
height="400" z-index="2" />

</layout>

</head>

  
<body>

<par> 

<video id="v_1" fit="fill" region="region_v"   begin="1s"   end="50s"
src="Cloud_timelapse03_ogg_avi_f_1.ogg"    />

      

<img id="i_1"  fit="fill"  region="region_i"  begin="2s" end="50s"
src="a859332195_339fb3158a_o_3.gif"    />  

  

</par>

</body>

</smil>

--------------------------------------------------------------------------------------
Received on Saturday, 4 October 2008 23:24:02 GMT

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