[vlc] Re: vlc stop when playing H.264 RTP stream

[jogging song]

Thanks, Chris
      Payload type in RTP header is 96.
  Before it is about to receive RTP stream, vlc need a SDP.  I'm not sure
whether the sdp file is right.
v=0
m=video 1100 RTP/AVP 96
b=AS:247
a=rtpmap:96 H264/90000
a=fmtp:96 packetization-mode=1;profile-level-id=42001E;

I read the RFC3984, and change it to the following.

v=0
m=video 1100 RTP/AVP 96
b=AS:247
a=rtpmap:96 H264/90000
a=fmtp:96
packetization-mode=0;profile-level-id=42001E;sprop-parameteter-sets=Z0IAHpZ0Ficg,aM44gA==

It still doesn't work.

The RTP stream consists of RTP of 300 frames. And only the first frame is an
IDR frame(I frame), which has a sps and pps.
All other frame is P frame.

But VLC stops after printing the following things:
packetizer_h264 debug: found NAL_SPS
packetizer_h264 debug: found NAL_PPS
I don't know why it stops after recognizing sps and pps.


And i think sps and pps already are in sdp file, so I don't send sps and
pps.
Vlc will print "waiting for sps".

Thanks
jogging


On 3/8/07, chris.2.dobbs at bt.com <chris.2.dobbs at bt.com> wrote:
>
>  Not sure what that erro msg means but here are a few quick things to
> check:
> 1. Are you setting the RTP payload to 96 in your stream?
> 2. Are you setting correct timestamp framing intervals in your stream ,
> think u need to increment rtp timestamp by 30Ms every time u start sending a
> new frame. Keep this timestamp constant for frames spanning several packets.
> 3. Are you keeping the RTP SSRC at constant value all the way through?
>
> Can you post the first few packets here?- use ethereal or something to
> capture and I'll take a look.
> -Chris
>
>  ------------------------------
> *From:* vlc-bounce at videolan.org [mailto:vlc-bounce at videolan.org] *On
> Behalf Of *jogging song
> *Sent:* 08 March 2007 12:52
> *To:* vlc at videolan.org
> *Subject:* [vlc] vlc stop when playing H.264 RTP stream
>
> hi,
>     Now I use VLC to play H.264 RTP stream.I encounter some problems.
> Before it is about to receive RTP streams,  VLC read a SDP like this,
> v=0
> m=video 1100 RTP/AVP 96
> b=AS:247
> a=rtpmap:96 H264/90000
> a=fmtp:96 packetization-mode=1;profile-level-id=42001E;
>
> Then I send RTP packets, and VLC recieve them.But VLC stops after printing
> the following things:
> packetizer_h264 debug: found NAL_SPS
> packetizer_h264 debug: found NAL_PPS
>
> Can anyone help me?Thanks
> Best Regards
> jogging
>
>
>
>
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