Tee and pad programming

[Ian Davidson]

Hi Akmal,

That pipeline indicates that there is no link between filesink and 
nvcamerasrc.  So, filesink is the end of a line and nvcamerasrc is the 
start of a new line.

The same thing happens after  h264parse ! mux.video_0

Ian


On 06/06/18 13:10, Akmal Hisyam wrote:
> 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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