Mostly a backup account for now, other @Deebsters are available.
I’m not sure how the Mastodon–(ActivityPub)–>Lemmy bit works, but Lemmy doesn’t have a concept of a gallery. The first(?) media is your video, and that’s showing up in Lemmy. I assume it’s dropping the other images since there’s no Lemmy structure to put the other media items into.
btw, now I’m on Firefox/Win10 with the default Lemmy frontend and I can see that video and play it from Lemmy’s embed, so perhaps most people can see it (as long as they don’t click on the .mp4 link).
By “linked” I meant that it’s where the URL field of a Lemmy post is pointed at, not the other pages you linked in the post body. Now I’m on a PC again, I see that that link is to the leafy-backgrounded .mp4 (so there’s no chance the embedder would have found the other post images if Lemmy didn’t present them).
I think the mp4s-not-playing problem is a Mastodon bug/quirk as I’ve seen it before - neither Firefox nor Chrome can play them when navigated to, but both can play embedded and they work when downloaded. From the console logs, it seems to be a problem with the Content Security Policy stopping the rest of the video loading (since browsers only load the first chunk of a video to allow streaming):
Chrome:
Refused to load media from ‘https://furry.engineer/system/media_attachments/files/114/090/866/048/236/635/original/897a5752b038f3e3.mp4’ because it violates the following Content Security Policy directive: “default-src ‘none’”. Note that ‘media-src’ was not explicitly set, so ‘default-src’ is used as a fallback.
Firefox:
Content-Security-Policy: The page’s settings blocked the loading of a resource (media-src) at https://furry.engineer/system/media_attachments/files/114/090/866/048/236/635/original/897a5752b038f3e3.mp4 because it violates the following directive: “default-src ‘none’”
Huh, so there is. I’m not 100% on how Voyager works - specifically I think (but don’t know) that it’s got the video because it’s connected to the linked URL (your original post in this case) and pulled down data to make the link preview.
If that’s right, it means Lemmy isn’t handing the media at all.
My Lemmy app (Voyager) shows the video, so at least some of us can see it.
I liked that you didn’t bring up the email comparison until fairly late - lots of people reach for it very early in their explanations, but it’s so different to what the Fediverse offers that I think it just confuses people.
I raised my eyebrows clear off my head when you said that the different instances interact “seamlessly”, but you did loop back and give a more nuanced/honest account. Good stuff!
Not really a “not the onion” story.