receiving rtsp and send it to UDP

[Farshid Bakhtyari]

Hello All,

I have an IP camera streaming  h264 over rtsp. 

In my video controller (in Java) , I have the following to capture the stream , save a copy and then forward the video over UDP. Here is my command (sending end):

 Bin bin = Bin.launch("tee name=t  t.  ! queue ! videoconvert ! autovideosink "

  +" t. ! queue ! videoconvert ! videoscale ! capsfilter caps=video/x-raw,width=640,height=480 ! appsink name=appsink "

  +" t. ! queue ! matroskamux ! filesink location=./MultiSinkPlayBin.mkv"

  + " t. ! queue ! videoconvert ! udpsink host=127.0.0.1 port=5432", true );

I am using the MultiSinkExample code. The playbin's URI is set to the camera's URL. 

The video stream shows up and the file gets created with video. But I cannot get the UDP working. 

(On the receiving end):

In order to receive the video over UDP I am issuing the following from command line:

gst-launch  -e udpsrc port=5432 !  filesink location=./UDP3IPIP.mkv

What am I doing wrong? 

I would appreciate your help.

Thanks,

Farshid

[Farshid Bakhtyari]

Hello All, 

Anyone, any hint? I would appreciate your time and help on this issue.

Thanks,

Farshid

[Neil C Smith]

Hi,

I'll have a look properly next week. But try drawing out your pipeline on paper and noting the data passing through each element / connection. An obvious problem is that there is only a matroskamux before the filesink, not the udpsink. But I would probably add a second tee. Get rid of either the appsink or autovideosink section too.

Best wishes, 

Neil

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[Farshid Bakhtyari]

Thanks a lot, Neil. 

I will take your advice and see if I make any progress, and will let you know. 

I also look forward to your suggestions sometimes next week.

Thanks again,

Farshid

On Monday, April 30, 2018 at 1:45:22 PM UTC-4, Farshid Bakhtyari wrote:

[Farshid Bakhtyari]

Hello All,

Finally, I managed to get the updsrc/udpsink working. But I don't know in depth what was wrong and why it's working now. I assume it had to do with encoding and decoding (rtph264pay and rtph264depay) the stream. 

here is what I did on sending (or forwarding) part :

Bin bin = Bin.launch("tee name=t  " 

  +" t. ! queue ! videoconvert ! videoscale ! capsfilter caps=video/x-raw,width=640,height=480 ! videorate ! video/x-raw,framerate=1/3 ! appsink name=appsink "

  + " t. ! queue ! videorate ! video/x-raw,framerate=1/3 ! x264enc pass=qual quantizer=20 tune=zerolatency ! rtph264pay ! udpsink host=127.0.0.1 port=5432 ", true);

and on the receiving end: I issued this on the command line:

gst-launch-1.0 -e -v udpsrc port=5432  ! "application/x-rtp, payload=127" ! rtph264depay ! decodebin ! glimagesink

 

Since I am new to gstreamer and all its intricacies, I will continue educating myself. 

The original signal/uri from the camera was :

rtsp://192.168.0.92/axis-media/media.amp?videocodec=h264&camera=1

I am wondering if I can do this better (more efficient) in any form or shape. Anyone has any idea how can I improve this stream?

I would greatly appreciate your inputs and suggestions.

Thanks,

Farshid

On Monday, April 30, 2018 at 1:45:22 PM UTC-4, Farshid Bakhtyari wrote: