Is it possible to add output based tests to gstreamer ?

[Stuart Axon]

With imagefreeze (thanks @Tim).  + raspi2png [1]

I can get capture output, successfully

e.g. 

$ timeout 2s gst-launch-1.0 filesrc location=1.png ! decodebin ! imagefreeze ! glimagesink & sleep 1 && raspi2png

Correctly outputs to snapshot.png
If I do the same for jpeg then there is no output (bug already reported). 


Is there a way I can add something like this as tests to gstreamer ?



[1] - raspi2pnghttps://github.com/AndrewFromMelbourne/raspi2png


 S++
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