Android - HTTP Url not working

[Purva]

Hi ,
I tried gstreamer video tutorial 5. But it shows me error unable to call
java method. Tutorial source :
https://gstreamer.freedesktop.org/documentation/tutorials/android/a-complete-media-player.html?gi-language=c

I am able to call other methods like state ready, native play etc.

Apart from this I tried http url loading but it's not playing the preview.
I am adding this code in gst_parse_launch function 
-v souphttpsrc location=http://10.11.12.13/mjpeg
    do-timestamp=true ! multipartdemux
    ! image/jpeg,width=640,height=480 ! matroskamux
    ! filesink location=mjpeg.mkv

This is also not working any help regarding same? My goal is to either I can
work jni method or setting up url manually.



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