[Live-devel] HELP - AMR support using RTSP

[Moretzky Sarit]

As you said I tried to use the openRTSP as my client.
I run it with the URL "rtsp://192.118.51.178:554/videoBlogger/test.3gp"
and save the output to file like this 
./openRTSP -4 rtsp://192.118.51.178:554/videoBlogger/test.3gp > sara.mp4

One of the messages I got was "We don't implement a QuickTime Audio
Media for the "AMR" track, so we'll insert a dummy "????" Media Data
Atom instead"

I was requested to edit the file before playing it with the right codec
("Before you can play such a track, you will need to edit the QuickTime
file. ")

How can I do it?

Does it mean that the "openRTSP" do not records AMR audio data
correctly?

Pls help

Sara



-----Original Message-----
From: live-devel-bounces at ns.live.com
[mailto:live-devel-bounces at ns.live.com] On Behalf Of Ross Finlayson
Sent: Tuesday, January 18, 2005 12:54 PM
To: LIVE.COM Streaming Media - development & use
Subject: Re: [Live-devel] HELP - AMR support using RTSP



>In our project, we are using the live.com libraries to add streaming 
>support (RTSP) to the VLC player application.

I hope you mean: *extend* the RTSP streaming support in the VLC player 
application.  (VLC has been using the LIVE.COM code to implement RTSP 
(client) streaming for more than a year now.)

>We are trying to play 3gp stream (amr+mpeg4) from the streaming server,

>using the VLC, but can only see the video without hearing the audio :(
>
>The error msg I get is "Audio drift too big".
>
>This problem (Audio drift too big) was resolved in the VLC development 
>version , However is was not resolved for the RTSP.
>
>Now we can hear the audio (AMR) only when we play 3gp files locally
(not a 
>live stream).
>
>Can you please help?

Probably not.  But one thing you could try is run "openRTSP" 
<http://www.live.com/openRTSP/> as your client, to see if it records a 
proper AMR audio file from the stream.  (Note that "openRTSP" uses
exactly 
the same LIVE.COM RTSP client implementation that VLC uses.)  If
"openRTSP" 
records AMR audio data correctly, then the problem is unlikely to be in
the 
LIVE.COM code.

>  I need to know what changes should I do in the live.com src, in order
to 
> hear the audio while streaming the media.

It's not clear that any changes need to be made to the LIVE.COM code,
but 
possibly some changes need to be made to the "livedotcom.cpp" VLC 
module.  If so, you will need to discuss this with the VLC developers
(as 
"livedotcom.cpp" is their code).


	Ross Finlayson
	LIVE.COM
	<http://www.live.com/>

_______________________________________________
live-devel mailing list
live-devel at lists.live.com
http://lists.live.com/mailman/listinfo/live-devel
______________________________________________________________________
  This email message has been scanned by PineApp Mail-Secure and has
been found clean.