Implement Video playback for video calls

[Sreesanth46]

If a user joins last on a video call the user should be able to watch what happened on the call before joining the call.

• The user should be able to join to the live call
• The user should also be able to play the video playback of the video call. Something "like" live in youtube.

Is there a way or example that I can refer to implement thin in agora.