[Asterisk-video] app_rtsp: No media found!

[Sergio Garcia Murillo]

Hi Matthew,

If nativeformats is 4, then there is no videosupport for the channel. 
Are you calling with xlite?
Try opening the video tab and check that in the SDP there is video 
offer. Also try putting the
videosupport=yes on the extension and not only on the general part.

About the GetUdpPorts, RTSP expect two consecutive udp ports, even for 
RTP and odd for RTCP,
it should be quite inmediate. Is your machine under heavy load?
It is extrange to have so much difference between two sockets creating 
them almos consecutively:

6331,54114,55376,58352,60667,33667,58224,58225

Best regards
Sergio

Matthew Allen escribió:
> Hello,
>
> I'm trying to use Sergio's app_rtsp (latest version) to connect to a
> QTSS stream. I'm running Asterisk 1.6.0.
>
> The stream is video only in H.263+ (H.263-1998) encoding.  My sip.conf
> has "videosupport=yes" and "allow=h263p" among other codecs. We can
> successfully have video calls using the X-Lite client using H.263+ for
> video.  The extension that calls app_rtsp is set up correctly. The
> stream should be fine; both Quicktime and VLC play the stream just fine.
>
> When I call up the extension to test app_rtsp I always get "No media
> found".  It doesn't make it past the DESCRIBE request.
>
> (Also, at the start of the call, there's about 5 to 10 seconds of
> repeatedly calling GetUdpPorts before it actually proceeds to the
> DESCRIBE.  It could be related to these warnings when I compile:
>
> app_rtsp.c: In function 'GetUdpPorts':
> app_rtsp.c:284: warning: pointer targets in passing argument 3 of
> 'getsockname' differ in signedness
> app_rtsp.c:287: warning: pointer targets in passing argument 3 of
> 'getsockname' differ in signedness
> app_rtsp.c:306: warning: pointer targets in passing argument 3 of
> 'getsockname' differ in signedness
>
> ...but I don't think this is the source of my problem.)
>
> I've been trying to track down where the problem is... I think it might
> be on line 1247:
>
> 1247:    if (sdp->video->formats[i]->format & chan->nativeformats)
> 1248:    {
>              < ... sets videoType, videoFormat, videoControl ...>
> 1257:    }
>
> That if statement evaluates to false for me.  The video format gets set
> properly to 1048576 (which is the bit for H.263-1998), but the value of
> chan->nativeformats is 4, whatever that is, so it's false and those
> variables never get set.  Later on it decides "no media found".  Do I
> need to do something to change the value of chan->nativeformats?
>
> I'm attaching my debug log, I added a couple of debug statements of my
> own (start with !!!).
>
> Thanks for any help, let me know if I can should any other info,
>
> Mat
>
>
>
>
>
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