Gstreamer notes

Gstreamer

Lets say:
IP Address of Raspberry: 192.168.0.106
IP Address of ubuntu Desktop: 192.168.0.103
IP Address of remote linux server to copy image files: 192.168.0.200

1) On Raspberry pi , run the camera and stream using gstreamer as below:
raspivid -t 0 -w 800 -h 600 -fps 25 -g 5 -b 4000000 -vf -n -o - | gst-launch -v fdsrc ! h264parse ! gdppay ! tcpserversink host=192.168.0.106 port=5000


2) On Ubuntu desktop, run the local rtsp server as below:
	-open a new terminal ( Alt + F2 , type "gnome-terminal" )
	-type the following commands	
		cd /home/deepak/gst-rtsp-0.10.8/examples/
		./test-launch "( tcpclientsrc host=192.168.0.106 port=5000 ! gdpdepay ! rtph264pay name=pay0 pt=96 )"

3) Open a new terminal on ubuntu desktop and view the stream as below:
	-open a new terminal ( Alt + F2 , type "gnome-terminal" )
	-type the following command
		gst-launch-0.10 rtspsrc location=rtsp://192.168.0.103:8554/test ! rtph264depay ! ffdec_h264 ! textoverlay text="TEAMID:12345    CAMERAID:0908879" halign=center valign=top ! timeoverlay halign=right valign=bottom ! clockoverlay halign=left valign=bottom time-format="%Y/%m/%d %H:%M:%S" !  xvimagesink sync=false


4) Open a new terminal on ubuntu desktop and record the video as below:
	-open a new terminal ( Alt + F2 , type "gnome-terminal" )
	-type the following command
		gst-launch-0.10 rtspsrc location=rtsp://192.168.0.103:8554/test ! rtph264depay ! ffdec_h264 ! textoverlay text="TEAMID:12345    CAMERAID:0908879" halign=center valign=top ! timeoverlay halign=right valign=bottom ! clockoverlay halign=left valign=bottom time-format="%Y/%m/%d %H:%M:%S" ! avimux ! filesink location=chandu.avi

	-Press Ctrl+c to stop the recording.

5) To take a screenshot while streaming, 
	-open a new terminal , or connect from another windows via putty
	-change the directory to store images
		cd /tmp/files/
	-type the following command
		shutter -w "gst-launch-0.10" -e -o './%y-%m-%d_$w_$h.jpeg'
	-Overlay team Indus logo 
		convert 14-01-02_1301_744.jpeg index.jpeg -gravity north-east -composite -format jpg -quality 100 output.jpg
	-Overlay another logo
		convert 14-01-02_1301_744.jpeg india.png -gravity north-east -composite -format jpg -quality 100 output.jpg
	-Copy file, to remote desktop:
		scp output.jpg user@192.168.0.200:/tmp
	** Will give you a script to automate this process.

6) Overlay the video:
	 ffmpeg -i test.avi -vf "movie=india.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:10 [out]" outputvideo.flv
	** The quality of the overlayed video is not good.


Errors when compiling and installing: ^^^^^^^
-------------------------------------
Installing glibc devel ubuntu.
root@deepak:/home/deepak# apt-get install libglib2.0-dev
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 libglib2.0-dev : Depends: libglib2.0-0 (= 2.40.0-2) but 2.40.2-0ubuntu1 is to be installed
                  Depends: libglib2.0-bin (= 2.40.0-2)
E: Unable to correct problems, you have held broken packages.
root@deepak:/home/deepak# apt-get install build-essentials

Solution :
Right now newer glibc is installed on the system, downgrade as specified.
root@deepak:/home/deepak# apt-get install libglib2.0=2.40.0-2
And then install devel package:
root@deepak:/home/deepak# apt-get install libglib2.0-dev

# installing gstreamer0.10-ffmpeg plugin

sudo add-apt-repository ppa:mc3man/trusty-media
sudo apt-get update
sudo apt-get install gstreamer0.10-ffmpeg



#----------------------------------


Another method of running the video:
on rapi:
/opt/vc/bin/raspivid -t 0 -hf -fps 20 -w 800 -h 600 -o - | gst-launch-1.0 fdsrc ! h264parse ! rtph264pay config-interval=1 pt=96 ! gdppay ! tcpserversink host=192.168.0.101 port=5000

on client:
gst-launch-1.0 -v tcpclientsrc host=192.168.0.101 port=5000 ! gdpdepay ! rtph264depay ! avdec_h264 ! videoconvert ! autovideosink sync=false

If got error:
WARNING: erroneous pipeline: no element "gdpdepay"

Solution:
sudo apt-get install gstreamer1.0-plugins-bad

thanks a lot bro