On Thu, Nov 25, 2021 at 12:56:24PM +0200, Martin Storsjö wrote:
> On Thu, 25 Nov 2021, lance.lmw...@gmail.com wrote:
>
> > From: Limin Wang <lance.lmw...@gmail.com>
> >
> > Signed-off-by: Limin Wang <lance.lmw...@gmail.com>
> > ---
> > doc/protocols.texi | 4 ++++
> > libavformat/rtpproto.c | 17 ++++++++++++++---
> > libavformat/rtsp.c | 3 +++
> > libavformat/rtsp.h | 1 +
> > 4 files changed, 22 insertions(+), 3 deletions(-)
> >
> > diff --git a/doc/protocols.texi b/doc/protocols.texi
> > index c100f23..d207df0 100644
> > --- a/doc/protocols.texi
> > +++ b/doc/protocols.texi
> > @@ -1087,6 +1087,10 @@ set to 1) or to a default remote address (if set to
> > 0).
> > @item localport=@var{n}
> > Set the local RTP port to @var{n}.
> >
> > +@item localaddr=@var{addr}
> > +Local IP address of a network interface used for sending packets or joining
> > +multicast groups.
>
> Just to clarify things for myself for understanding this: Today, if
> receiving UDP unicast, we can use udp://<localip>:<port> to select which
> local IP address to listen on? But for multicast, we'd do
> udp://<multicast-ip>:<port>?localaddr=<localip> to select which address to
> use for joining the group?
yes, it's useful to select/bind which network interface to use for the multicast
stream in case you have many network port, udp have support it already, but rtp
haven't
yet.
>
> // Martin
>
--
Thanks,
Limin Wang
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