Computing power requirements for video streaming

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  • whatever your camera supports as output pixelformat, comes without delay
  • however: decoding and re-encoding into a different format costs (significant amounts of) computing power
  • so: it is best to use a camera native format and just send that
  • but: you still need to decode and display it on the other end, that's where your graphics card comes in:
    • using a CPU to encode/decode a video stream is generally very inefficient
    • better use a GPU to decode and direct render a compressed pixelformat stream!

Logitech C920

  • support up to 1920x1024 @ 30fps (the fps are actually dynamic, depending on how much the camera moves)

Mali 400 (on Mini Xplus)

  • capable of hardware H264 decoding


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