Tee and pad programming

[Akmal Hisyam]

Hello GStreamer Team!

I referred to this webpage
https://www.jetsonhacks.com/2014/10/28/gstreamer-network-video-stream-save-file/
on how to get preview, how to do recording and how to send stream to
network by TCP.

As I'm on Jetson TX2, I tried the pipeline with '*nvcamerasrc*' as the
video source element and it works! I also modified the pipeline for video
recording and for sending stream over network by TCP only without the
preview queue. So, it goes like this :






*gst-launch-1.0 avimux name=mux! filesink
location=/media/nvidia/SSDJetson/test.mp4 nvcamerasrc fpsRange="30.0 30.0"!
'video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080,
format=(string)I420, framerate=(fraction)30/1' ! omxh264enc
bitrate=14000000 control-rate=variable ! tee name=tsplit! queue ! h264parse
! mux.video_0 tsplit.! queue ! h264parse ! queue ! matroskamux! queue
leaky=2 ! tcpserversink host=192.x.x.x port=7001*

Thanks to this guide, I managed to launch this on command line. I'm used to
transform gstreamer pipeline into C/C++ programming code but I'm still a
beginner. However, this is my first time I saw this form of pipeline where
it starts with the muxer and then the "*filesink*" and "*nvcamerasrc*"
elements are bordered in the same "! ...!" like this "*! filesink
location=/media/nvidia/SSDJetson/test.mp4 nvcamerasrc fpsRange="30.0 30.0"
!*". I'm not familiar at all with this form of pipeline but I wanted to
transform this into code.

I have two problems, I don't know how to create the "*filesink*" and "
*nvcamerasrc*" elements in the same '*gst_element_factory_make*'.
Plus, I don't know how to transform "*mux.video_0 tsplit.*" to code.

Do you have any examples on this? So far, I haven't managed to find any
code examples related to this on internet.

Thanks in advance!


Akmal
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