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Re: SMIL file not able to play wmv file in real player

From: Jack Jansen <Jack.Jansen@cwi.nl>
Date: Fri, 3 Oct 2008 22:42:52 +0200
Cc: Bimal <bimalupadhyay@gmail.com>, www-smil@w3.org
Message-Id: <4497F1EF-BEE5-4108-8B24-C3D5494365B2@cwi.nl>
To: Stefan de Konink <skinkie@xs4all.nl>

On  3-Oct-2008, at 17:34 , Stefan de Konink wrote:

>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA512
>
> Bimal schreef:
>>        I have a strange problem . I have a SMIL file which play a  
>> wmv file
>> ..
>>        I used a Real player for playing the SMIL . The playing only  
>> showing
>> audio not video .
>
> Welcome in the world of media format compatibility... no you cannot  
> fix
> this.

I'm in the process of creating a number of video clips in often-used  
formats to test how our Ambulant player plays these back. (So, as an  
aside to the OP: even the people who *write* SMIL players aren't  
always sure what plays back when:-).
As media formats I'm using mp4 (h263 or h264, aac), mpeg1, mpeg2,  
quicktime, wmv (some recent codec), rm, ogg, vorbis, mp3, wav. For the  
audio-video formats, content is clearly synchronised (so sync errors  
of more than about 2 or 3 frames can be visually detected), and stereo  
content is 100% separated (to detect bleed or channel reversal). I'm  
interested in playback from local file, over http and over rtsp  
(currently only with the Darwin server).

If there are people willing to help I would be interested in turning  
this into a community effort: test other SMIL players (real, for  
example) and other rtsp servers. This would require at least  
volunteers who can host the media on a realserver, windows media  
server and whatever else is available. It would also require a Wiki  
(to store the results) and people to actually test the various players  
(which needn't only be SMIL players, by the way: it's also interesting  
to see how VLC and Windows Media Player and all the other non-SMIL  
players fare).

I can put some time into this, but not really all that much, so if you  
are interested and have some time to spend on this: please contact me!


--
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
Received on Friday, 3 October 2008 20:43:33 GMT

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