How to duplicate the HDMI output to DSI?

I have two display port(HDMI and DSI), and I want the two display port output the same video. How could I do?

Thank you!

Does anyone know somthing about it?


Are you talking about the 100% sync of two display? How about using “tee” in gstreamer pipeline to separate the output to different overlaysink? With the parameter “displayid”, you could render to different display.

Thank you very much. I will make a try. But actually, I 'm using drm(MMAPI) to render. Could you provide some other suggestions?


If so, you need to run two NvDrmRenderer with different connector and crtc but same input DMA fd. Also, you need to sync this two threads.


OK! Thanks for your suggestion.