Pause and resume live video with latest frames without affecting the sink

[vk_gst]

Hi,

The `v4l2src` is going to paused state, after the element `imagefreeze` is
added, and not when I remove the element `imagefreeze`. Following is a log
only after the addition of element `imagefreeze` in the pipeline. 

:03:39.608226968 29510      0x1561c00 INFO                
v4l2src gstv4l2src.c:949:gst_v4l2src_create:<source> sync to
0:03:39.066664476 out ts 0:03:39.375180156
0:03:39.608449406 29510      0x1561c00 INFO                
basesrc gstbasesrc.c:2965:gst_base_src_loop:<source> pausing after
gst_pad_push() = eos
0:03:39.608561724 29510      0x1561c00 INFO                   
task gsttask.c:316:gst_task_func:<source:src> Task going to paused

And here is the code.  debug.txt
<http://gstreamer-devel.966125.n4.nabble.com/file/t378365/debug.txt>  

I am trying to understand the behaviour here. Does anyone have any pointers
to this behaviour?



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