https://www.youtube.com/channel/UC58IHx5AcHaE9ceS9Fdoocg/live

<iframe width="560" height="315" src="https://www.youtube.com/embed/live_stream?channel=UC58IHx5AcHaE9ceS9Fdoocg" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

オンデマンド 

ffmpeg -i fujimi-cm.mp4 -profile:v baseline -level:v 3.1 -g 48 fujimi-cm-b.mp4

24fpsの場合