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#1 Old interactive mobile TV - 2006-02-11, 12:20

Join Date: Jan 2006
Posts: 6
dermicha
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I want to have a J2ME application that displays a live streamed video, text and some buttons. The textual infos and button actions have to be synchronized with the live video stream. One use case is a tv shopping channel. My current issue is to synchronize the video with the text and button actions. First I tried to get the meta data I had embedded in the RealMedia stream (using RMEvents tool and slta play lists). But MetaDataController interface is not implemented on my N70. I found no other Nokia platform that supports that interface. Therefor I tried to use MediaTime (player.getMediaTime()). That seemed to be a good solution until I found out that the MediaTime is not synchronized with the current frames the user sees on his phone display. The MediaTime on my phone is always 3-6 seconds ahead. This is at least my biggest problem. I found no way to determine the amount of time that the MediaTime is ahead.

Because of the MediaTime based problem I started to think about parsing the rtsp stream to extract MetaData from the video stream on my own. Has anyone tried that successful?

Has anyone similar experiences? Any alternative ideas or a solution?

cheers,
Michael

my enviroment:
- S602ndFP3 based Nokia N70 phone
- Real Universal Server with mobile option
- slta generated rtsp video stream with rm8/3gpp encoding
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#2 Old Re: interactive mobile TV - 2006-03-01, 10:29

Join Date: Oct 2003
Posts: 120
alice77
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hi dermicha,

I am just trying the same get the original RTP data from Streaming Server and try to play it on mobile.but couldnt get anything. hope by this time u got any soluion if yes please let me know that as i need to complete my final year project as soon as possible.
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#3 Old Re: interactive mobile TV - 2006-03-03, 07:43

Join Date: Mar 2006
Posts: 65
brokendove
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Quote:
Originally Posted by dermicha
Because of the MediaTime based problem I started to think about parsing the rtsp stream to extract MetaData from the video stream on my own. Has anyone tried that successful?

Has anyone similar experiences? Any alternative ideas or a solution?

cheers,
Michael
Have you tried using the FramePositioningControl? I am not sure if it is implemented in your environment, but it may help.


Vikram Goyal,
First Book on Mobile Media API (MMAPI) - Coming Soon from Apress
Register at: [url]http://www.mmapibook.com[/url]
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#4 Old Re: interactive mobile TV - 2006-03-03, 09:23

Join Date: Oct 2003
Posts: 120
alice77
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Hmm so ur pasring the metdata on the mobile , I think it is quite hefty do that on client side and does the rtsp request is landing on the server . I mean are u sure that rtsp request is reaching your streaming server , I dont think so,bcos I got the same probelm at my side the request didnt reach at all on the my Server.
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