poster frame for videos

[aaronpk]

Right now the spec says if an h-entry contains a video, then it's a video post. In practice, there are often h-entrys with both a video and photo property, where the photo is intended to be the poster frame of the video. This also serves as a fallback for consumers that don't know about videos.

It'd be useful for the spec explicitly say how to handle poster images, and what to do when there is a photo property in addition to the video property.

The way I've been explaining it is:

if there is a single value for both the video and photo properties, the photo is a poster frame for the video

[tantek]

I think this is a good improvement and makes sense.

I also think "poster frame detection" could be a video-type-specific algorithm that could be specified independently rather than confounding the return value(s) of Post Type Discovery.

I suggest brainstorming this on the indieweb wiki, perhaps as indieweb.org/poster-frame-discovery and normatively referencing Post Type Discovery for first determining that a post is a video post.

Suggest closing without any changes to this spec.