unable to decode multicasting issue from gstreamer rtsp server

[Jake Zhang]

Any data point. I redirect mutlcasting to go to loopback device by doing
below and got same results.

route add -net 224.0.0.0 netmask 240.0.0.0 dev lo
ifconfig lo multicast

tcpdump and wireshark shows gstreamer rtsp server is outputting correct
data but VLC and ffmpeg is unable to demux/decode them. All rtsp
handsharking part was complete (DESCRIBE/SETUP/PLAY) without issue. Media
is prerolled and played.



On Tue, Nov 29, 2016 at 8:34 PM, Jake Zhang <zjpseudo at gmail.com> wrote:

> I am using rtsp sever 1.10.0
> Even for the ./test_multicast example, VLC and ffmpeg is unable to decode
> the video.
> If I use wireshark to capture all the pkts, I can extra the correct video
> data out of pcap data.
>
> I was suspecting my network setting has issue, but if I use another rtsp
> streaming
> server like live555 of ffserver, I have no issue.
>
> I also tried using udpsink to do multicasting, also works, so I am kind of
> confused why typical rtsp demuxers like vlc or ffmpeg is unable to decode
> the video.
>
> Nothing looks wrong from log.
>
> Any ideas what I am missing here?
>
> Thanks
>
>
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