That is what the link I posted is about?
On a sending Rpi you launch raspivid or whatever to capture from camera. Then you need some kind of network protocol wrapping (simplest is just netcat, more involved is RTP over UDP with GStreamer). Then on receiving RPi you need a video player. Many are lead astray by trying to use what they know, i.e., VLC, which seems to work not so well.
The link I posted is simplest possible solution, taking network stream and playing it using demo tool "hello_video", which plays H264 camera stream using hw acceleration. OP there made his own variant "hello_video_simple" that disregards timing and plays incoming frames as soon as they arrive.
More involved network protocol like RTP needs player that can understand RTP (and at the same time HW acceleration).
So two possibilities (among others) are
raspivid →netcat → netcat → hello_video_simple
GStreamer capture and RTP sending pipeline → Gstreamer receiving pipeline with RTP unwrapping and OMX decode