[vlc-devel] Small utility to add RTP headers to raw UDP MPEG-TS

[Marian Ďurkovič]

On Mon, Aug 11, 2008 at 01:19:02PM +0200, Christophe Massiot wrote:
> On Mon, Aug 11, 2008, Marian Ďurkovič wrote:
> 
> >    recently we run into requirement to generate RTP stream from legacy
> > encoder, which unfortunately only supports MPEG-TS over raw UDP.
> > 
> >    As raw UDP is unsuitable for anything larger than local LAN, I put
> > together a small utility based on VLC sources, which adds proper RTP
> > headers to such stream. The utility supports IPv4 unicast / multicast,
> > including SSM.
> 
> It is probably of no importance to you, but please notice that the RTP
> timestamp is not correct : the spec says it should be in the same scale
> and origin as the PCR, which is not the case here (since it is generated
> from the wall clock and not from the stream).
[snip]
> Alternatively, you can also search all PIDs for an adaptation field
> containing PCR, and then consider it is the PCR_PID, but funny boys can
> also send PCRs on PIDs which are not supposed to carry them. Should work
> with most streams though.

Just FYI, I implemented the above suggestion and uploaded new version
of this utility to http://md.bts.sk/rtpstream


    With kind regards,

          M.

--------------------------------------------------------------------------
----                                                                  ----
----   Marian Ďurkovič                       network  manager         ----
----                                                                  ----
----   Slovak Technical University           Tel: +421 2 571 041 81   ----
----   Computer Centre, Nám. Slobody 17      Fax: +421 2 524 94 351   ----
----   812 43 Bratislava, Slovak Republic    E-mail/sip: md at bts.sk    ----
----                                                                  ----
--------------------------------------------------------------------------