[Bug 782496] New: rtmpsrc: Streaming a live rtmp stream over a slow network eventually stops

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=782496

            Bug ID: 782496
           Summary: rtmpsrc: Streaming a live rtmp stream over a slow
                    network eventually stops
    Classification: Platform
           Product: GStreamer
           Version: unspecified
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: jadahl at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

It's spring time, meaning time to watch wild birds in their nests. This is done
playing a RTMP live stream. The problem is that, when doing this over network
connection that is slow enough to occasionally requiring buffering, after some
time, gstreamer will eventually stop streaming all together.

Before this happens, there will usually be some significant buffering sessions,
and the displayed video content will slip further and further away (time wise)
from the live stream. This can be easily observed by looking at a timestamp in
the video content, comparing it to the clock of the computer. Sometimes,
gstreamer will struggle playing over a couple of minutes old stream content,
before stopping completely. Restarting the video player resolves the problem,
and the bird watching can continue.

Steps to reproduce:

1. Start a bird watching session, for example one of the Ospray nests in
Estonia:

gst-play-1.0 rtmp://193.40.133.138/live/kalakotkas2

2. Watch birds, observe the clock in the bottom left corner (on my machine,
they only differ a few seconds)

... time passes, internet speed varies ...

3. Gstreamer will have a hard time showing new frames, it'll try to buffer,
maybe show a new frame, buffer, .. at this time, one can observe the clock in
the video and clock in on the computer differs more

4. Gstreamer will forever give up and not show anything new

For example, while writing this bug-report, the time difference went from ~5s
to ~30s.

Work-around:

Restart the player, and it'll work again. 

gstreamer version: 1.11.91
Tested with vlc, totem and just gst-play.


(for info about the nests, see http://www.looduskalender.ee/n/en/node/1230 )

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