Use OBS or FFmpeg to push RTMP stream:
rtmp://rtmp.livega3.online:1935/live/YOUR_STREAM_KEY
FFmpeg example:
ffmpeg -re -i video.mp4 -c:v libx264 -c:a aac -f flv rtmp://rtmp.livega3.online:1935/live/test
HLS Playback URL:
https://stream.livega3.online/hls/YOUR_STREAM_KEY.m3u8
Embed URL:
https://stream.livega3.online/embed/YOUR_STREAM_KEY