Problems with thumbnails from Soundcloud and YouTube oneboxes

[david (David Taylor)]

These are both tricky problems, and I think for now we will be leaving the behavior as-is. We may be able to add some improvements in future. I created a couple of #feature topics to track progress

For the YouTube difference, see:

Add thumbnails for YouTube playlist URLs

For normal YouTube videos, we use a custom embedding system. This doesn’t support the playlist UI. So that explains the difference. https://github.com/discourse/discourse/commit/076ed66e690bb9a8899103f75ce47560594d0bf0 We’re not planning any immediate changes here, but I’ll leave this topic open as a feature request.

For the soundcloud issue, see:

Thumbnails for iframe oneboxes

Continuing the discussion from Problems with thumbnails from Soundcloud and YouTube oneboxes: When oneboxes are created with an iframe, we have no image to pull as a thumbnail. It would be cool if Onebox could supply an image for us to use. Pavilion’s topic-list-previews plugin had this workaround: But this has quite a large performance cost, so I don’t think we want to do it in core. I see a couple of clean options: Onebox could supply a thumbnail url. We would need to teach Discourse t…