How to tell video dock component that video is playing so it goes to dock position?

Does anyone know how to tell video dock component from video player component IFRAME that video is playing and that it can undock when it goes out of the viewport ?

For example how to fire postMessage that the component will be able to recieve it? (Just example amphtml\extensions\amp-jwplayer\0.1\amp-jwplayer.js)

Would it be in this case something like this?

 postMessage({
  type: 'play',
  detail: 'test'
}, window);

So I am building a new video player, that will be able to dock. For example like these: amp-brid-player amp-brightcove amp-dailymotion amp-delight-player amp-ima-video amp-jwplayer amp-video amp-video-iframe amp-youtube

1. How can I tell from my video player iframe to the dock component that my video is playing and that it can dock
2. is it neccesery to have this request to our server that returns HTML and player inside it, or can I just build inframe on client side and load my player that way?

[rsimha]

Thanks for your question @strix25. Our documentation for how to implement video docking can be found at https://github.com/ampproject/amphtml/blob/main/extensions/amp-video-docking/amp-video-docking.md. It mentions the dock attribute, which can be used to communicate to the component that a video must be docked when the viewport scrolls past the video. However, I’m not sure if this is designed to work for videos in iframes.

Tagging @alanorozco and @jridgewell, who should know mode about this.

/cc @damjan25

[damjan25]

@alanorozco How to tell player to undock(go back to static position) ? Sometimes it happens that player crashes and then it is showing only white floating (dock) square. It would be really nice if there is some function I can call to tell player to undock.