[vlc] Re: H263 over RTP

[chris.2.dobbs at bt.com]

Aha...! That seemes to work although I am seeing odd problems when vlc
plays the stream.
The stream plays ok for about 3 seconds, then freezes producing the
following message in the debug window:

ffmpeg warning: illegal ac vlc code at 2x8
 (h263 at 00B1E370)
ffmpeg warning: Error at MB: 98
 (h263 at 00B1E370)
ffmpeg debug: concealing 65 DC, 65 AC, 65 MV errors
 (h263 at 00B1E370)
live555 debug: lost 2048 bytes
live555 debug: increasing buffer size to 524288

Then it starts playing again for about 3 secs and produces moer of the
above but the buffer size keeps getting increased until vlc blows up.


To re-cap, I am trying to use VLC tp playback an RTP/H263 video stream
(RTP/H263 payload using RFC2429). I am giving VLC the following SDP
manually as a file.

v=0
o=- 7776 3 IN IP4 10.215.130.112
s=Test H263 stream
i=Parameters for the session streamed by "ChipsAhoyH263"
t=0 0
m=video 7776 RTP/AVP 98
a=rtpmap:98 H263-1998/90000
a=fmtp:98 profile=0; level=40
b=TIAS:2048000 


Any ideas?

-Chris

-----Original Message-----
From: vlc-bounce at videolan.org [mailto:vlc-bounce at videolan.org] On Behalf
Of Marian Durkovic
Sent: 27 February 2007 08:49
To: vlc at videolan.org
Subject: [vlc] Re: H263 over RTP

> Tried this SDP and VLC doesn't seem to be seeing the incoming RTP 
> traffic at all; ethereal tells me it's there as RTP/H263 (RFC 2429) - 
> eventho it's trying to decode it as RFC2190 !
> I wondered if I need to put the dynamic payload type into the RTP 
> header instead of type 34?

Sure, you need to send the packets with the same payload type as you've
specified in the SDP (98).

> I am sending RTP traffic from 10.215.131.65 to 10.215.130.112 (where 
> the vlc palyer is)

If you're announcing multicast address in the SDP, you should also send
the packets to that address (and not to 10.215.130.112).


	With kind regards,

		M.

------------------------------------------------------------------------
--
----
----
----   Marian Durkovic                       network  manager
----
----
----
----   Slovak Technical University           Tel: +421 2 524 51 301
----
----   Computer Centre, Nam. Slobody 17      Fax: +421 2 524 94 351
----
----   812 43 Bratislava, Slovak Republic    E-mail/sip: md at bts.sk
----
----
----
------------------------------------------------------------------------
--

--
This is the vlc mailing-list, see http://www.videolan.org/vlc/ To
unsubscribe, please read http://www.videolan.org/support/lists.html

-- 
This is the vlc mailing-list, see http://www.videolan.org/vlc/
To unsubscribe, please read http://www.videolan.org/support/lists.html