I'd like to send information (regions of interest in the image for
example) between these two pipelines. I tried to use
gst_buffer_add_meta() to send these information, but the encoders (here
nvh264enc, but I tried with x264enc, nvh265enc, vp8enc...) remove these
metadata, therefore I can't use them in my second pipeline.
Is there something that I am missing to exchange information between
pipelines? How can I achieve this result with or without GstMeta?