<div dir="ltr">Thanks for the info. I will use <span style="font-size:12.8000001907349px">wireshark to check this. This goes through through a WIFI as well, but I doubt that is the reason as I can successfully stream between same machine using VLC. Having a </span><span style="font-size:12.8000001907349px">jitterbuffer in the client side did not help.</span><div><span style="font-size:12.8000001907349px"><br></span></div><div><span style="font-size:12.8000001907349px">however I was able to stream very successfully using following chains. </span></div><div><span style="font-size:12.8000001907349px"><br></span></div><div><span style="font-size:12.8000001907349px">gst-launch-1.0 -v filesrc location=file.mp4 ! decodebin ! x264enc ! rtph264pay pt=96 ssrc=0 timestamp-offset=0 seqnum-offset=0 pt=96 ! gdppay ! tcpclientsink host=192.168.1.95 port=5000</span></div><div><span style="font-size:12.8000001907349px"><br></span></div><div><span style="font-size:12.8000001907349px"><br></span></div><div><span style="font-size:12.8000001907349px">gst-launch tcpserversrc host=0.0.0.0 port=5000 ! gdpdepay ! rtph264depay ! ffdec_h264 ! autovideosink</span></div><div><span style="font-size:12.8000001907349px"><br></span></div><div><span style="font-size:12.8000001907349px">I guess it will work even if I switch TCP client and server.</span></div><div><span style="font-size:12.8000001907349px"><br></span></div><div><span style="font-size:12.8000001907349px">Since this uses TCP, late joining is not supported, but having TCP is better in my case as I am not sure if routers will support multicast generally. (even with in the same network).<br></span><div><span style="font-size:12.8000001907349px"><br></span><div><span style="font-size:12.8000001907349px"><br></span></div><div><br></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jul 29, 2015 at 3:39 PM, Chuck Crisler-2 [via GStreamer-devel] <span dir="ltr"><<a href="/user/SendEmail.jtp?type=node&node=4672919&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>></span> wrote:<br><blockquote style='border-left:2px solid #CCCCCC;padding:0 1em' class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">First, take a wireshark trace on the client to see the rate that the packets are arriving. Do you really need the h264parse on the server? You should also add a jitterbuffer on the client between the udpsrc and the rtph264depay. Is this going over hardwire network or WiFi?<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Jul 25, 2015 at 10:14 AM, suspension <span dir="ltr"><<a href="http:///user/SendEmail.jtp?type=node&node=4672914&i=0" rel="nofollow" link="external" target="_blank">[hidden email]</a>></span> wrote:<br><blockquote style='border-left:2px solid #CCCCCC;padding:0 1em' style="border-left:2px solid #cccccc;padding:0 1em" class="gmail_quote">I have the following streaming source:<br>
gst-launch -v filesrc location=<file.mkv> ! decodebin ! vpuenc codec=6 !<br>
video/x-h264 ! h264parse ! rtph264pay config-interval=1 pt=96 ! udpsink<br>
host=224.25.2.55 port=5000<br>
<br>
And following client:<br>
gst-launch udpsrc uri=udp://<a href="http://224.25.2.55:5000" rel="nofollow" link="external" target="_blank">224.25.2.55:5000</a> caps="application/x-rtp,<br>
media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264,<br>
sprop-parameter-sets=(string)\"Z0JAHqaA1C2QAA\\=\\=\\,aM44gAA\\=\",<br>
payload=(int)96, ssrc=(uint)2905425995, clock-base=(uint)1674913653,<br>
seqnum-base=(uint)52583" ! rtph264depay ! ffdec_h264 ! queue ! autovideosink<br>
<br>
This works, but playback speed fluctuates in the client. It plays properly<br>
for half a second, slows down for a half a second, again plays at normal<br>
speed and so on.<br>
<br>
I have tried following already without any luck.<br>
Use mpeg4 encoding<br>
Changing various properties in udpsrc, udpsink, rtph264pay, vpuenc, etc.<br>
Used loop-back address rather than multicast<br>
directly streaming H264<br>
<br>
What am I doing wrong? It looks like client is running out of data to play.<br>
The Server pipeline runs in a IMX6 based platform and uses hardware<br>
accelerated decoder/encoder. The top command in that machine shows very<br>
little use of CPU.<br>
<br>
Sometime I see following warnings in the client machine:<br>
There may be a timestamping problem, or this computer is too slow.<br>
WARNING: from element<br>
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstXvImageSink:autovideosink0-actual-sink-xvimage:<br>
A lot of buffers are being dropped.<br>
Additional debug info:<br>
gstbasesink.c(2875): gst_base_sink_is_too_late ():<br>
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstXvImageSink:autovideosink0-actual-sink-xvimage:<br>
<br>
<br>
But my client machine is a modern laptop and should not have any issue<br>
decoding and displaying this video.<br>
<br>
The video in concern is of HD quality.<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
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