GStreamer freezes on iOS9 with udp multicast

Sebastian Dröge sebastian at centricular.com
Fri Jun 3 05:35:39 UTC 2016


On Mi, 2016-06-01 at 14:53 -0700, Macjon wrote:
> Hi,
> 
> I'm creating an iOS 9 app with gstreamer. I'm connecting my app to a
> hardware device that is sending a stream (via gstreamer) over UDP multicast.
> 
> But when I connect my app to the hardware device, I only get the first frame
> of the stream and then it stops, the image freezes. If I start a ping to my
> iOS device, the stream resumes. If I stop the ping again it freezes again.
> 
> This is a really weird behaviour because it only happens on an iOS 9 device.
> When I test my app on an iOS 7 device it works perfectly.
> 
> Is this a bug in iOS 9 or is it a GStreamer setting I'm missing?

Please check in the debug logs what exactly happens right before it
freezes, and while it freezes. Are UDP packets still arriving, e.g. did
iOS turn off the wifi for energy saving reasons? If not, up to where in
the pipeline are packets processing, are there any errors, ...?

-- 
Sebastian Dröge, Centricular Ltd · http://www.centricular.com
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