Resolve "Add RTP stream support"

What does this MR do?

Adds support for RTP stream on different grabbers

VideoOpenCV/SFrameGrabber

Add a new ffmpeg grabber

Clean opencv links/includes with cmake.

Closes #229 (closed)

This MR needs OpenCV built with ffmpeg, for that we've updated opencv, you can also check and approve this MR https://git.ircad.fr/conan/conan-opencv/merge_requests/2

How to test it?

• To test VideoOpenCV/SFrameGrabber:

1. You'll need to run an application that uses the videoOpenCV grabber, ARCalibration works well.
2. Select stream modality and fill in the stream part (You can use Harmonic's multicast stream rtp://239.0.124.8:5000).
3. Press the play button and you should see this screen.

Data

A stream from Harmonic's multicast module is available at rtp://239.0.124.8:5000. (this may also work as well rtp://@239.0.124.8:5000)

Associated Issues/Merge Requests

• Issues
  • Closes #229 (closed)