Add a logo in deepstream_test1

Hello! recently, I successfully ran deepstream_test1 with the samples h-264 format video and even camera(ream-time detection). Now I want to simply add a logo(just like the logo on a channel in a TV show) to the top left of the video interface. Can someone tell me how to modify the source code ‘deepstream_test1.c’? I look forward to your anwsers.

Is it possible to add a gstreamer probe function after the decoder plugin and using opencv API to add the logo to the original frame.

Could you please give us an relevant example of logo or any other references? we’ve got no experience of realizing this kind of fonction.Thank you!

Pls refer GStreamer doc