How to view FPS of received RTSP stream

[Aswin Pranav]

Thanks for the input guys, but now my problem is:
When my receiver pipeline is simply " gst-launch-1.0 rtspsrc location=
rtsp://10.20.13.24:8554/test name=r latency=0 ! rtph264depay ! avdec_h264 !
xvimagesink sync=0" it *appears* that my video is almost-realtime (150 ms
latency between server and client using a stopwatch) and is rendering
smoothly at 30 fps (this value was set at the server source). But then when
I modify my pipeline to this: "gst-launch-1.0 rtspsrc location= rtsp://
10.20.13.24:8554/test name=r latency=0 ! rtph264depay ! avdec_h264 !
fpsdisplaysink name=fpssink video-sink=xvimagesink sync=0 -v" I get
considerable latency between server and client (almost 5 seconds), the
video visibly stutters, and the frame rate comes up to an average of 18 ms
with 0 dropped frames.

When I set sync=1, all hell breaks loose and I get a drop rate of 30 fps
(on avg)! I get maximum frame rendered per second . What is going on?! Does
fpsdisplaysink influence the speed of my receiver pipeline in some manner?
What can I do about it? Is there a lower overhead way of checking fps?

Thanks.


On Wed, 15 Jun 2016 at 19:37 Nicolas Dufresne <nicolas at ndufresne.ca> wrote:

>
> Le 2016-06-15 16:03, "Sankar,Aswin Pranav" <apsankar at ufl.edu> a écrit :
> >
> > Hi all,
> >
> >
> > Here's my gstreamer receiver pipeline: gst-launch-1.0 rtspsrc location=
> rtsp://10.20.13.24:8554/test name=r latency=0 ! rtph264depay ! avdec_h264
> ! fpsdisplaysink name=fpssink text-overlay=false video-sink=xvimagesink
> signal-fps-measurements=true
> >
> >
> > When I launch this pipeline, I receive the rtp stream, but it appears in
> a normal window, i.e, like an xvimagesink. I cannot see any frame rate
> counter or indicator. What do I need to change?
>
> You have disabled the overlay, so the information will be posted as
> application message. Implement a bus handler to receive those. With
> gst-launch you can add the -m parameter to trace messages.
>
> >
> >
> > Thanks,
> >
> > -Aswin
> >
> >
> > _______________________________________________
> > gstreamer-devel mailing list
> > gstreamer-devel at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> >
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