To send your live stream to Livepush, you will need an encoder either software or hardware. For most usage OBS software works perfect and is a great free streaming tool.
You can also use other encoders to stream to Livepush including;
Streamlabs OBS (SLOBS),
or any other similar tool
You can also use any other similar functioning software/hardware encoder to publish your live stream to Livepush RTMP servers.