I am trying to move an Region of Interest (RoI) around a multi-camera tiled source (which will be too big to encode for smooth viewing), and stream this "live". The RoI is externally determined which is another problem.

Does anyone have an idea how to achieve this? The solutions I have seen so far require pre-determined RoIs, or potentially change the filter parameters using the libzmq library, but I am not sure if that will be performant enough for a per frame stream.

any help much appreciated!

  • How soon in advance of a frame will you know the RoI?
    – Gyan
    Jun 16, 2022 at 4:09
  • Gyan, it will be at the same time, I could in theory add a delay to the start of the output stream if that helps matters, and doesn't lead to desyncing
    – leelio
    Jun 16, 2022 at 7:47


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