@phil1 @robert.j.h.chandler
just googled “gst-launch green screen” and found a lot of topics, one saying :
‘green’ color indicates uninitialized memory in YUV formats. This could eg. be the nvvidconv not filling all pars of the buffer.
https://www.google.com/search?q=gst-launch+green+screen&oq=gst-launch+green+screen&aqs=chrome..69i57j0.4841j0j4&sourceid=chrome&ie=UTF-8
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