Are you trying to embed the MP4 in the post? If so, you need to go in the admin UI of your peertube (/admin/overview/videos/list?search=isLocal:true) , and "Run Web Video Transcoding". That will give you a single mp4 file that can put in a note for instant playback. Headsup though, if the video goes viral, the p2p feature will not work like this and it will cost you some good bandwidht :sppc: