Hey, I am currently trying to understand a bit better what the Activity Pub allows and what it doesn't as I am preparing a presentation on that topic.

On Lemmy I can join other servers without having to recreate an account. Does that also work for across Activity Pub supporting software? Could I join a PeerTube page and then post there? Could I upload videos? Could I join Mastodon or Pixelfed and post images?

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[–] Blaze@lemmy.zip 3 points 1 day ago* (last edited 1 day ago) (1 children)

@Snoopy@feddit.fr, I think it works for Piefed?

[–] Snoopy@feddit.fr 5 points 1 day ago* (last edited 1 day ago) (2 children)

On piefed you can join :

Peertube channel : https://tarte.nuage-libre.fr/topic/peertube/mondelibre and crosspost them.
in late 2025 : follow mastodon account.
follow Pixelfed : not supported.
later in 2026, mobilizon : we can create event post. The base is ready for futur federation with mobilizon : https://codeberg.org/rimu/pyfedi/issues/291

On mbin, you can join :

peertube channel
mastodon account
pixelfed (probably supported but i don't know well mbin)

Lemmy

peertube : i got bad result with peertube but maybe over time they solved it, i haven't retested it. It was possible but you had to manually retrieve the video
mastodon : not supported.

People from mastodon, pixelfed...can post on lemmy, mbin, piefed. They need to mention the forumverse community. Eg :
@forumlibre@jlai.lu

I often recommand this formatting on mastodon :

The first paragraph will be the title

And i chose the community where i would like to post, eg : @forumlibre@jlai.lu

The second paragraph will be the body text

#someHashtag

Another note : markdown may not be supported accross fediverse software. For example : https://piefed.social/post/1004603

[–] poVoq@slrpnk.net 4 points 1 day ago (1 children)

Peertube on Lemmy was AFAIK recently fixed.

[–] Snoopy@feddit.fr 2 points 1 day ago* (last edited 1 day ago)

Great, i'm testing it. Well there is some federation issue. Some of these works. It's hard to give a good diagnostic.

[–] Blaze@lemmy.zip 3 points 1 day ago

Thank you! @VoxAliorum@lemmy.ml fyi