Running dynamic pipeline of compositor gets segmentation fault

[longkas]

int padIdx = 0;

//remove
GstPad* pad = gst_element_get_static_pad(compositor, "sink_" + padIdx );
gst_element_remove_pad(compositor, pad); 

//create a new pad
padIdx ++;
GstPad* pad = gst_element_get_request_pad(compositor, "sink_" + padIdx);

//link
gst_pad_link(srcPad, pad);



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