title: ROS node for compressed video with a very low latency for raspberry camera module V2
body: <p>Im using raspberry Pi 4 B and have installed ROS melodic. I have Raspberry Pi Camera V2.1. Would like to send a compressed video with a low latency as much as possible to the Microrcontroller (ESP32) via sonar. So its important to have a very low latency as the sonar has a low bandwidth. I look at this github camera node <a href="https://github.com/UbiquityRobotics/raspicam_node" rel="nofollow noreferrer">raspberry pi camera node for Pi Camera V2</a> but the compressed video has a latency of more than 2 seconds. Any other way or other approaches or other help to overcome the issue with the latency?</p>
  <p>Thanks</p>