Gstreamer version issue

[Lijing]

Hi, I’m sorry, but I only tried Gstreamer 1.4.3, so I can’t say for sure whether the version will affect delay or frame drop. 
I think the delay and frame drop is caused by the encoding part. I do have this problem(Warning “A lot of buffers are being dropped.") when I play it back immediately like “gst-launch-1.0 autovideosrc  num-buffers=-1 do-timestamp=TRUE ! queue !  x264enc speed-preset=superfast ! queue ! h264parse  ! avdec_h264 ! autovideosink” , but it works well like ““gst-launch-1.0 autovideosrc ! autovideosink”.
And if I don’t play it back immediately, but record them into a mp4 file, it doesn’t have frame drops as well, like “gst-launch-1.0 -e autovideosrc ! queue ! x264enc speed-preset=veryfast ! queue ! mux. osxaudiosrc ! queue !  audioconvert ! queue ! voaacenc  ! queue ! mux. mp4mux name=mux ! filesink location= 3.mp4 sync=true”. 
So I think the problem should be the encoding speed can’t match the playing back speed(also parsing & decoding ). In your part, maybe it’s encoding speed and rtpsinking speed. But I’m also seeking the solution now… We may discuss.

I do 
> On Jan 7, 2015, at 10:28 PM, Gokul Vellingiri [via GStreamer-devel] <ml-node+s966125n4670145h20 at n4.nabble.com> wrote:
> 
> I tried streaming video from v4l2src to my android mobile,and also the streaming is working fine with some frame drop and delay in reception.Actually i am using Gstreamer-0.10 version running on my server side(CAMERA src) and Gstreamer-1.0 version running on my receiver side(Android device). 
> 
> SERVER: 
> gst-launch-0.10 mfw_v4lsrc capture-mode=4 fps-n=30 fps-d=1 device=/dev/video1 ! vpuenc codec=avc seqheader-method=3 ! video/x-h264 ! rtph264pay  pt=96 ! udpsink host=192.168.4.100 port=8000 -v
> 
> CLIENT: 
> data->pipeline = gst_parse_launch("udpsrc port=8000 ! application/x-rtp, clock-rate=90000, encoding-name=(string)H264, payload=96  !  rtpjitterbuffer ! queue ! rtph264depay ! h264parse  ! decodebin ! fpsdisplaysink sync=true ",&error);
> 
> Will these different version affect delay or frame drop during streaming.Also any suggestion to minimize the frame drop factor?? 
> 
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